Finding the Fourth Proportional to 52,402.40, 72,316.61 and 28,530.38

Step by Step Solution

1. Step 1: Write the proportion equation
   52,402.40 : 72,316.61 = 28,530.38 : x
2. Step 2: Convert to fraction form
   52,402.40/72,316.61 = 28,530.38/x
3. Step 3: Cross multiply
   52,402.40x = 72,316.61 × 28,530.38
4. Step 4: Simplify right side
   52,402.40x = 2,063,220,401.75
5. Step 5: Solve for x
   x = 2,063,220,401.75/52,402.40
6. Step 6: Final answer
   x = 39,372.64