Finding the Fourth Proportional to 52,402.72, 72,315.92 and 28,529.60

Step by Step Solution

1. Step 1: Write the proportion equation
   52,402.72 : 72,315.92 = 28,529.60 : x
2. Step 2: Convert to fraction form
   52,402.72/72,315.92 = 28,529.60/x
3. Step 3: Cross multiply
   52,402.72x = 72,315.92 × 28,529.60
4. Step 4: Simplify right side
   52,402.72x = 2,063,144,271.23
5. Step 5: Solve for x
   x = 2,063,144,271.23/52,402.72
6. Step 6: Final answer
   x = 39,370.94