Finding the Fourth Proportional to 52,632.69, 72,632.28 and 28,758.87

Step by Step Solution

1. Step 1: Write the proportion equation
   52,632.69 : 72,632.28 = 28,758.87 : x
2. Step 2: Convert to fraction form
   52,632.69/72,632.28 = 28,758.87/x
3. Step 3: Cross multiply
   52,632.69x = 72,632.28 × 28,758.87
4. Step 4: Simplify right side
   52,632.69x = 2,088,822,298.32
5. Step 5: Solve for x
   x = 2,088,822,298.32/52,632.69
6. Step 6: Final answer
   x = 39,686.79