Finding the Fourth Proportional to 52,218.86, 72,062.12 and 28,345.53

Step by Step Solution

1. Step 1: Write the proportion equation
   52,218.86 : 72,062.12 = 28,345.53 : x
2. Step 2: Convert to fraction form
   52,218.86/72,062.12 = 28,345.53/x
3. Step 3: Cross multiply
   52,218.86x = 72,062.12 × 28,345.53
4. Step 4: Simplify right side
   52,218.86x = 2,042,638,984.32
5. Step 5: Solve for x
   x = 2,042,638,984.32/52,218.86
6. Step 6: Final answer
   x = 39,116.88