Finding the Fourth Proportional to 52,664.16, 72,675.72 and 28,790.28

Step by Step Solution

1. Step 1: Write the proportion equation
   52,664.16 : 72,675.72 = 28,790.28 : x
2. Step 2: Convert to fraction form
   52,664.16/72,675.72 = 28,790.28/x
3. Step 3: Cross multiply
   52,664.16x = 72,675.72 × 28,790.28
4. Step 4: Simplify right side
   52,664.16x = 2,092,354,328.00
5. Step 5: Solve for x
   x = 2,092,354,328.00/52,664.16
6. Step 6: Final answer
   x = 39,730.14