Finding the Fourth Proportional to 52,622.72, 72,618.12 and 28,749.44

Step by Step Solution

1. Step 1: Write the proportion equation
   52,622.72 : 72,618.12 = 28,749.44 : x
2. Step 2: Convert to fraction form
   52,622.72/72,618.12 = 28,749.44/x
3. Step 3: Cross multiply
   52,622.72x = 72,618.12 × 28,749.44
4. Step 4: Simplify right side
   52,622.72x = 2,087,730,283.85
5. Step 5: Solve for x
   x = 2,087,730,283.85/52,622.72
6. Step 6: Final answer
   x = 39,673.55