Finding the Fourth Proportional to 11,401.49, 15,734.31 and 7,152.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,401.49 : 15,734.31 = 7,152.72 : x
2. Step 2: Convert to fraction form
   11,401.49/15,734.31 = 7,152.72/x
3. Step 3: Cross multiply
   11,401.49x = 15,734.31 × 7,152.72
4. Step 4: Simplify right side
   11,401.49x = 112,543,113.82
5. Step 5: Solve for x
   x = 112,543,113.82/11,401.49
6. Step 6: Final answer
   x = 9,870.92