Finding the Fourth Proportional to 52,584.72, 72,567.04 and 28,711.40

Step by Step Solution

1. Step 1: Write the proportion equation
   52,584.72 : 72,567.04 = 28,711.40 : x
2. Step 2: Convert to fraction form
   52,584.72/72,567.04 = 28,711.40/x
3. Step 3: Cross multiply
   52,584.72x = 72,567.04 × 28,711.40
4. Step 4: Simplify right side
   52,584.72x = 2,083,501,312.26
5. Step 5: Solve for x
   x = 2,083,501,312.26/52,584.72
6. Step 6: Final answer
   x = 39,621.80