Finding the Fourth Proportional to 52,329.53, 72,216.12 and 28,457.60

Step by Step Solution

1. Step 1: Write the proportion equation
   52,329.53 : 72,216.12 = 28,457.60 : x
2. Step 2: Convert to fraction form
   52,329.53/72,216.12 = 28,457.60/x
3. Step 3: Cross multiply
   52,329.53x = 72,216.12 × 28,457.60
4. Step 4: Simplify right side
   52,329.53x = 2,055,097,456.51
5. Step 5: Solve for x
   x = 2,055,097,456.51/52,329.53
6. Step 6: Final answer
   x = 39,272.23