Finding the Fourth Proportional to 23,117.12, 31,901.57 and 13,045.53

Step by Step Solution

1. Step 1: Write the proportion equation
   23,117.12 : 31,901.57 = 13,045.53 : x
2. Step 2: Convert to fraction form
   23,117.12/31,901.57 = 13,045.53/x
3. Step 3: Cross multiply
   23,117.12x = 31,901.57 × 13,045.53
4. Step 4: Simplify right side
   23,117.12x = 416,172,938.77
5. Step 5: Solve for x
   x = 416,172,938.77/23,117.12
6. Step 6: Final answer
   x = 18,002.80