Finding the Fourth Proportional to 52,238.72, 72,087.57 and 28,364.90

Step by Step Solution

1. Step 1: Write the proportion equation
   52,238.72 : 72,087.57 = 28,364.90 : x
2. Step 2: Convert to fraction form
   52,238.72/72,087.57 = 28,364.90/x
3. Step 3: Cross multiply
   52,238.72x = 72,087.57 × 28,364.90
4. Step 4: Simplify right side
   52,238.72x = 2,044,756,714.29
5. Step 5: Solve for x
   x = 2,044,756,714.29/52,238.72
6. Step 6: Final answer
   x = 39,142.55