Finding the Fourth Proportional to 52,845.98, 72,930.86 and 28,972.72

Step by Step Solution

1. Step 1: Write the proportion equation
   52,845.98 : 72,930.86 = 28,972.72 : x
2. Step 2: Convert to fraction form
   52,845.98/72,930.86 = 28,972.72/x
3. Step 3: Cross multiply
   52,845.98x = 72,930.86 × 28,972.72
4. Step 4: Simplify right side
   52,845.98x = 2,113,005,386.14
5. Step 5: Solve for x
   x = 2,113,005,386.14/52,845.98
6. Step 6: Final answer
   x = 39,984.22