Finding the Fourth Proportional to 10,256,113.20, 15,377,336 and 5,647,269.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,256,113.20 : 15,377,336 = 5,647,269.72 : x
2. Step 2: Convert to fraction form
   10,256,113.20/15,377,336 = 5,647,269.72/x
3. Step 3: Cross multiply
   10,256,113.20x = 15,377,336 × 5,647,269.72
4. Step 4: Simplify right side
   10,256,113.20x = 86,839,963,967,065.92
5. Step 5: Solve for x
   x = 86,839,963,967,065.92/10,256,113.20
6. Step 6: Final answer
   x = 8,467,141.72