Finding the Fourth Proportional to 52,640.28, 72,643.29 and 28,766.94

Step by Step Solution

1. Step 1: Write the proportion equation
   52,640.28 : 72,643.29 = 28,766.94 : x
2. Step 2: Convert to fraction form
   52,640.28/72,643.29 = 28,766.94/x
3. Step 3: Cross multiply
   52,640.28x = 72,643.29 × 28,766.94
4. Step 4: Simplify right side
   52,640.28x = 2,089,725,164.83
5. Step 5: Solve for x
   x = 2,089,725,164.83/52,640.28
6. Step 6: Final answer
   x = 39,698.22