Finding the Fourth Proportional to 22,842.64, 31,513.50 and 13,888.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,842.64 : 31,513.50 = 13,888.72 : x
2. Step 2: Convert to fraction form
   22,842.64/31,513.50 = 13,888.72/x
3. Step 3: Cross multiply
   22,842.64x = 31,513.50 × 13,888.72
4. Step 4: Simplify right side
   22,842.64x = 437,682,177.72
5. Step 5: Solve for x
   x = 437,682,177.72/22,842.64
6. Step 6: Final answer
   x = 19,160.75