Finding the Fourth Proportional to 23,117.59, 31,902.22 and 12,507.40

Step by Step Solution

1. Step 1: Write the proportion equation
   23,117.59 : 31,902.22 = 12,507.40 : x
2. Step 2: Convert to fraction form
   23,117.59/31,902.22 = 12,507.40/x
3. Step 3: Cross multiply
   23,117.59x = 31,902.22 × 12,507.40
4. Step 4: Simplify right side
   23,117.59x = 399,013,826.43
5. Step 5: Solve for x
   x = 399,013,826.43/23,117.59
6. Step 6: Final answer
   x = 17,260.18