Finding the Fourth Proportional to 10,002,136.47, 13,802,928.15 and 5,418,468.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,002,136.47 : 13,802,928.15 = 5,418,468.78 : x
2. Step 2: Convert to fraction form
   10,002,136.47/13,802,928.15 = 5,418,468.78/x
3. Step 3: Cross multiply
   10,002,136.47x = 13,802,928.15 × 5,418,468.78
4. Step 4: Simplify right side
   10,002,136.47x = 74,790,735,253,358.16
5. Step 5: Solve for x
   x = 74,790,735,253,358.16/10,002,136.47
6. Step 6: Final answer
   x = 7,477,475.99