Finding the Fourth Proportional to 52,845.89, 72,926.94 and 28,972.15

Step by Step Solution

1. Step 1: Write the proportion equation
   52,845.89 : 72,926.94 = 28,972.15 : x
2. Step 2: Convert to fraction form
   52,845.89/72,926.94 = 28,972.15/x
3. Step 3: Cross multiply
   52,845.89x = 72,926.94 × 28,972.15
4. Step 4: Simplify right side
   52,845.89x = 2,112,850,244.72
5. Step 5: Solve for x
   x = 2,112,850,244.72/52,845.89
6. Step 6: Final answer
   x = 39,981.35