Finding the Fourth Proportional to 28,304.72, 42,392.34 and 13,524.02

Step by Step Solution

1. Step 1: Write the proportion equation
   28,304.72 : 42,392.34 = 13,524.02 : x
2. Step 2: Convert to fraction form
   28,304.72/42,392.34 = 13,524.02/x
3. Step 3: Cross multiply
   28,304.72x = 42,392.34 × 13,524.02
4. Step 4: Simplify right side
   28,304.72x = 573,314,854.01
5. Step 5: Solve for x
   x = 573,314,854.01/28,304.72
6. Step 6: Final answer
   x = 20,255.10