Finding the Fourth Proportional to 52,784.28, 72,842.34 and 28,585.16

Step by Step Solution

1. Step 1: Write the proportion equation
   52,784.28 : 72,842.34 = 28,585.16 : x
2. Step 2: Convert to fraction form
   52,784.28/72,842.34 = 28,585.16/x
3. Step 3: Cross multiply
   52,784.28x = 72,842.34 × 28,585.16
4. Step 4: Simplify right side
   52,784.28x = 2,082,209,943.67
5. Step 5: Solve for x
   x = 2,082,209,943.67/52,784.28
6. Step 6: Final answer
   x = 39,447.54