Finding the Fourth Proportional to 52,312.06, 72,187.57 and 28,438.52

Step by Step Solution

1. Step 1: Write the proportion equation
   52,312.06 : 72,187.57 = 28,438.52 : x
2. Step 2: Convert to fraction form
   52,312.06/72,187.57 = 28,438.52/x
3. Step 3: Cross multiply
   52,312.06x = 72,187.57 × 28,438.52
4. Step 4: Simplify right side
   52,312.06x = 2,052,907,733.86
5. Step 5: Solve for x
   x = 2,052,907,733.86/52,312.06
6. Step 6: Final answer
   x = 39,243.49