Finding the Fourth Proportional to 23,116.42, 31,901.48 and 13,047.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,116.42 : 31,901.48 = 13,047.31 : x
2. Step 2: Convert to fraction form
   23,116.42/31,901.48 = 13,047.31/x
3. Step 3: Cross multiply
   23,116.42x = 31,901.48 × 13,047.31
4. Step 4: Simplify right side
   23,116.42x = 416,228,499.02
5. Step 5: Solve for x
   x = 416,228,499.02/23,116.42
6. Step 6: Final answer
   x = 18,005.75