Finding the Fourth Proportional to 12,906,604.93, 17,812,155.90 and 7,400,492.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,906,604.93 : 17,812,155.90 = 7,400,492.05 : x
2. Step 2: Convert to fraction form
   12,906,604.93/17,812,155.90 = 7,400,492.05/x
3. Step 3: Cross multiply
   12,906,604.93x = 17,812,155.90 × 7,400,492.05
4. Step 4: Simplify right side
   12,906,604.93x = 131,818,718,131,310.58
5. Step 5: Solve for x
   x = 131,818,718,131,310.58/12,906,604.93
6. Step 6: Final answer
   x = 10,213,275.98