Finding the Fourth Proportional to 52,618.69, 72,615.60 and 28,747.18

Step by Step Solution

1. Step 1: Write the proportion equation
   52,618.69 : 72,615.60 = 28,747.18 : x
2. Step 2: Convert to fraction form
   52,618.69/72,615.60 = 28,747.18/x
3. Step 3: Cross multiply
   52,618.69x = 72,615.60 × 28,747.18
4. Step 4: Simplify right side
   52,618.69x = 2,087,493,724.01
5. Step 5: Solve for x
   x = 2,087,493,724.01/52,618.69
6. Step 6: Final answer
   x = 39,672.10