Finding the Fourth Proportional to 10,541.40, 15,806.76 and 3,518.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,541.40 : 15,806.76 = 3,518.91 : x
2. Step 2: Convert to fraction form
   10,541.40/15,806.76 = 3,518.91/x
3. Step 3: Cross multiply
   10,541.40x = 15,806.76 × 3,518.91
4. Step 4: Simplify right side
   10,541.40x = 55,622,565.83
5. Step 5: Solve for x
   x = 55,622,565.83/10,541.40
6. Step 6: Final answer
   x = 5,276.58