Finding the Fourth Proportional to 5,518.71, 8,259.59 and 4,531.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,518.71 : 8,259.59 = 4,531.50 : x
2. Step 2: Convert to fraction form
   5,518.71/8,259.59 = 4,531.50/x
3. Step 3: Cross multiply
   5,518.71x = 8,259.59 × 4,531.50
4. Step 4: Simplify right side
   5,518.71x = 37,428,309.43
5. Step 5: Solve for x
   x = 37,428,309.43/5,518.71
6. Step 6: Final answer
   x = 6,782.08