Finding the Fourth Proportional to 12,109,066.90, 18,143,046.15 and 7,306,665.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,109,066.90 : 18,143,046.15 = 7,306,665.10 : x
2. Step 2: Convert to fraction form
   12,109,066.90/18,143,046.15 = 7,306,665.10/x
3. Step 3: Cross multiply
   12,109,066.90x = 18,143,046.15 × 7,306,665.10
4. Step 4: Simplify right side
   12,109,066.90x = 132,565,162,111,894.34
5. Step 5: Solve for x
   x = 132,565,162,111,894.34/12,109,066.90
6. Step 6: Final answer
   x = 10,947,595.15