Finding the Fourth Proportional to 23,118.86, 31,903.80 and 12,508.26

Step by Step Solution

1. Step 1: Write the proportion equation
   23,118.86 : 31,903.80 = 12,508.26 : x
2. Step 2: Convert to fraction form
   23,118.86/31,903.80 = 12,508.26/x
3. Step 3: Cross multiply
   23,118.86x = 31,903.80 × 12,508.26
4. Step 4: Simplify right side
   23,118.86x = 399,061,025.39
5. Step 5: Solve for x
   x = 399,061,025.39/23,118.86
6. Step 6: Final answer
   x = 17,261.28