Finding the Fourth Proportional to 8,483.31, 12,726.09 and 3,551.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,483.31 : 12,726.09 = 3,551.78 : x
2. Step 2: Convert to fraction form
   8,483.31/12,726.09 = 3,551.78/x
3. Step 3: Cross multiply
   8,483.31x = 12,726.09 × 3,551.78
4. Step 4: Simplify right side
   8,483.31x = 45,200,303.76
5. Step 5: Solve for x
   x = 45,200,303.76/8,483.31
6. Step 6: Final answer
   x = 5,328.14