Finding the Fourth Proportional to 16,666.31, 22,998.57 and 9,111.24

Step by Step Solution

1. Step 1: Write the proportion equation
   16,666.31 : 22,998.57 = 9,111.24 : x
2. Step 2: Convert to fraction form
   16,666.31/22,998.57 = 9,111.24/x
3. Step 3: Cross multiply
   16,666.31x = 22,998.57 × 9,111.24
4. Step 4: Simplify right side
   16,666.31x = 209,545,370.52
5. Step 5: Solve for x
   x = 209,545,370.52/16,666.31
6. Step 6: Final answer
   x = 12,572.99