Finding the Fourth Proportional to 12,345.33, 17,002.37 and 10,666.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,345.33 : 17,002.37 = 10,666.20 : x
2. Step 2: Convert to fraction form
   12,345.33/17,002.37 = 10,666.20/x
3. Step 3: Cross multiply
   12,345.33x = 17,002.37 × 10,666.20
4. Step 4: Simplify right side
   12,345.33x = 181,350,678.89
5. Step 5: Solve for x
   x = 181,350,678.89/12,345.33
6. Step 6: Final answer
   x = 14,689.82