Finding the Fourth Proportional to 52,402.16, 72,314.54 and 28,528.79

Step by Step Solution

1. Step 1: Write the proportion equation
   52,402.16 : 72,314.54 = 28,528.79 : x
2. Step 2: Convert to fraction form
   52,402.16/72,314.54 = 28,528.79/x
3. Step 3: Cross multiply
   52,402.16x = 72,314.54 × 28,528.79
4. Step 4: Simplify right side
   52,402.16x = 2,063,045,821.39
5. Step 5: Solve for x
   x = 2,063,045,821.39/52,402.16
6. Step 6: Final answer
   x = 39,369.48