Finding the Fourth Proportional to 52,588.81, 72,572.27 and 28,715.32

Step by Step Solution

1. Step 1: Write the proportion equation
   52,588.81 : 72,572.27 = 28,715.32 : x
2. Step 2: Convert to fraction form
   52,588.81/72,572.27 = 28,715.32/x
3. Step 3: Cross multiply
   52,588.81x = 72,572.27 × 28,715.32
4. Step 4: Simplify right side
   52,588.81x = 2,083,935,656.62
5. Step 5: Solve for x
   x = 2,083,935,656.62/52,588.81
6. Step 6: Final answer
   x = 39,626.98