Finding the Fourth Proportional to 3,535.59, 5,280.27 and 3,009.99

Step by Step Solution

1. Step 1: Write the proportion equation
   3,535.59 : 5,280.27 = 3,009.99 : x
2. Step 2: Convert to fraction form
   3,535.59/5,280.27 = 3,009.99/x
3. Step 3: Cross multiply
   3,535.59x = 5,280.27 × 3,009.99
4. Step 4: Simplify right side
   3,535.59x = 15,893,559.90
5. Step 5: Solve for x
   x = 15,893,559.90/3,535.59
6. Step 6: Final answer
   x = 4,495.31