Finding the Fourth Proportional to 23,103.60, 31,881.83 and 13,542.16

Step by Step Solution

1. Step 1: Write the proportion equation
   23,103.60 : 31,881.83 = 13,542.16 : x
2. Step 2: Convert to fraction form
   23,103.60/31,881.83 = 13,542.16/x
3. Step 3: Cross multiply
   23,103.60x = 31,881.83 × 13,542.16
4. Step 4: Simplify right side
   23,103.60x = 431,748,883.07
5. Step 5: Solve for x
   x = 431,748,883.07/23,103.60
6. Step 6: Final answer
   x = 18,687.51