Finding the Fourth Proportional to 10,545.39, 15,825.87 and 4,998.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,545.39 : 15,825.87 = 4,998.72 : x
2. Step 2: Convert to fraction form
   10,545.39/15,825.87 = 4,998.72/x
3. Step 3: Cross multiply
   10,545.39x = 15,825.87 × 4,998.72
4. Step 4: Simplify right side
   10,545.39x = 79,109,092.89
5. Step 5: Solve for x
   x = 79,109,092.89/10,545.39
6. Step 6: Final answer
   x = 7,501.77