Finding the Fourth Proportional to 9,340,987,336.48, 12,890,554,196.24 and 5,272,745,358.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,340,987,336.48 : 12,890,554,196.24 = 5,272,745,358.78 : x
2. Step 2: Convert to fraction form
   9,340,987,336.48/12,890,554,196.24 = 5,272,745,358.78/x
3. Step 3: Cross multiply
   9,340,987,336.48x = 12,890,554,196.24 × 5,272,745,358.78
4. Step 4: Simplify right side
   9,340,987,336.48x = 67,968,609,810,342,330,368
5. Step 5: Solve for x
   x = 67,968,609,810,342,330,368/9,340,987,336.48
6. Step 6: Final answer
   x = 7,276,383,894.12