Finding the Fourth Proportional to 12,377,116.10, 18,565,674.15 and 9,188,470.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,377,116.10 : 18,565,674.15 = 9,188,470.10 : x
2. Step 2: Convert to fraction form
   12,377,116.10/18,565,674.15 = 9,188,470.10/x
3. Step 3: Cross multiply
   12,377,116.10x = 18,565,674.15 × 9,188,470.10
4. Step 4: Simplify right side
   12,377,116.10x = 170,590,141,813,617.91
5. Step 5: Solve for x
   x = 170,590,141,813,617.91/12,377,116.10
6. Step 6: Final answer
   x = 13,782,705.15