Finding the Fourth Proportional to 52,491.86, 72,439.55 and 28,618.93

Step by Step Solution

1. Step 1: Write the proportion equation
   52,491.86 : 72,439.55 = 28,618.93 : x
2. Step 2: Convert to fraction form
   52,491.86/72,439.55 = 28,618.93/x
3. Step 3: Cross multiply
   52,491.86x = 72,439.55 × 28,618.93
4. Step 4: Simplify right side
   52,491.86x = 2,073,142,465.46
5. Step 5: Solve for x
   x = 2,073,142,465.46/52,491.86
6. Step 6: Final answer
   x = 39,494.55