Finding the Fourth Proportional to 16,686.32, 23,026.73 and 9,132.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,686.32 : 23,026.73 = 9,132.55 : x
2. Step 2: Convert to fraction form
   16,686.32/23,026.73 = 9,132.55/x
3. Step 3: Cross multiply
   16,686.32x = 23,026.73 × 9,132.55
4. Step 4: Simplify right side
   16,686.32x = 210,292,659.83
5. Step 5: Solve for x
   x = 210,292,659.83/16,686.32
6. Step 6: Final answer
   x = 12,602.70