Finding the Fourth Proportional to 22,928.55, 31,647.96 and 13,502.58

Step by Step Solution

1. Step 1: Write the proportion equation
   22,928.55 : 31,647.96 = 13,502.58 : x
2. Step 2: Convert to fraction form
   22,928.55/31,647.96 = 13,502.58/x
3. Step 3: Cross multiply
   22,928.55x = 31,647.96 × 13,502.58
4. Step 4: Simplify right side
   22,928.55x = 427,329,111.74
5. Step 5: Solve for x
   x = 427,329,111.74/22,928.55
6. Step 6: Final answer
   x = 18,637.42