Finding the Fourth Proportional to 28,701.72, 42,960.50 and 15,341.39

Step by Step Solution

1. Step 1: Write the proportion equation
   28,701.72 : 42,960.50 = 15,341.39 : x
2. Step 2: Convert to fraction form
   28,701.72/42,960.50 = 15,341.39/x
3. Step 3: Cross multiply
   28,701.72x = 42,960.50 × 15,341.39
4. Step 4: Simplify right side
   28,701.72x = 659,073,493.59
5. Step 5: Solve for x
   x = 659,073,493.59/28,701.72
6. Step 6: Final answer
   x = 22,962.86