Finding the Fourth Proportional to 10,557, 15,830.76 and 5,625.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,557 : 15,830.76 = 5,625.48 : x
2. Step 2: Convert to fraction form
   10,557/15,830.76 = 5,625.48/x
3. Step 3: Cross multiply
   10,557x = 15,830.76 × 5,625.48
4. Step 4: Simplify right side
   10,557x = 89,055,623.76
5. Step 5: Solve for x
   x = 89,055,623.76/10,557
6. Step 6: Final answer
   x = 8,435.69