Finding the Fourth Proportional to 28,059.53, 42,057.50 and 9,335.16

Step by Step Solution

1. Step 1: Write the proportion equation
   28,059.53 : 42,057.50 = 9,335.16 : x
2. Step 2: Convert to fraction form
   28,059.53/42,057.50 = 9,335.16/x
3. Step 3: Cross multiply
   28,059.53x = 42,057.50 × 9,335.16
4. Step 4: Simplify right side
   28,059.53x = 392,613,445.02
5. Step 5: Solve for x
   x = 392,613,445.02/28,059.53
6. Step 6: Final answer
   x = 13,992.16