Finding the Fourth Proportional to 9,309,836.47, 12,847,372.93 and 5,389,758.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,309,836.47 : 12,847,372.93 = 5,389,758.78 : x
2. Step 2: Convert to fraction form
   9,309,836.47/12,847,372.93 = 5,389,758.78/x
3. Step 3: Cross multiply
   9,309,836.47x = 12,847,372.93 × 5,389,758.78
4. Step 4: Simplify right side
   9,309,836.47x = 69,244,241,049,401.83
5. Step 5: Solve for x
   x = 69,244,241,049,401.83/9,309,836.47
6. Step 6: Final answer
   x = 7,437,750.52