Finding the Fourth Proportional to 9,771,111.20, 14,670,663.60 and 5,519,583.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,771,111.20 : 14,670,663.60 = 5,519,583.20 : x
2. Step 2: Convert to fraction form
   9,771,111.20/14,670,663.60 = 5,519,583.20/x
3. Step 3: Cross multiply
   9,771,111.20x = 14,670,663.60 × 5,519,583.20
4. Step 4: Simplify right side
   9,771,111.20x = 80,975,948,339,411.52
5. Step 5: Solve for x
   x = 80,975,948,339,411.52/9,771,111.20
6. Step 6: Final answer
   x = 8,287,281.42