Finding the Fourth Proportional to 12,309,123.99, 18,447,180.52 and 9,579,966.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,309,123.99 : 18,447,180.52 = 9,579,966.69 : x
2. Step 2: Convert to fraction form
   12,309,123.99/18,447,180.52 = 9,579,966.69/x
3. Step 3: Cross multiply
   12,309,123.99x = 18,447,180.52 × 9,579,966.69
4. Step 4: Simplify right side
   12,309,123.99x = 176,723,374,969,206.31
5. Step 5: Solve for x
   x = 176,723,374,969,206.31/12,309,123.99
6. Step 6: Final answer
   x = 14,357,104.13