Finding the Fourth Proportional to 10,257.61, 14,155.51 and 5,541.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,257.61 : 14,155.51 = 5,541.89 : x
2. Step 2: Convert to fraction form
   10,257.61/14,155.51 = 5,541.89/x
3. Step 3: Cross multiply
   10,257.61x = 14,155.51 × 5,541.89
4. Step 4: Simplify right side
   10,257.61x = 78,448,300.85
5. Step 5: Solve for x
   x = 78,448,300.85/10,257.61
6. Step 6: Final answer
   x = 7,647.82