Finding the Fourth Proportional to 13,597.47, 18,761.31 and 7,928.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,597.47 : 18,761.31 = 7,928.82 : x
2. Step 2: Convert to fraction form
   13,597.47/18,761.31 = 7,928.82/x
3. Step 3: Cross multiply
   13,597.47x = 18,761.31 × 7,928.82
4. Step 4: Simplify right side
   13,597.47x = 148,755,049.95
5. Step 5: Solve for x
   x = 148,755,049.95/13,597.47
6. Step 6: Final answer
   x = 10,939.91