Finding the Fourth Proportional to 23,301.07, 32,155.52 and 12,690.47

Step by Step Solution

1. Step 1: Write the proportion equation
   23,301.07 : 32,155.52 = 12,690.47 : x
2. Step 2: Convert to fraction form
   23,301.07/32,155.52 = 12,690.47/x
3. Step 3: Cross multiply
   23,301.07x = 32,155.52 × 12,690.47
4. Step 4: Simplify right side
   23,301.07x = 408,068,678.83
5. Step 5: Solve for x
   x = 408,068,678.83/23,301.07
6. Step 6: Final answer
   x = 17,512.87