Finding the Fourth Proportional to 5,498.40, 7,588.32 and 3,140.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,498.40 : 7,588.32 = 3,140.72 : x
2. Step 2: Convert to fraction form
   5,498.40/7,588.32 = 3,140.72/x
3. Step 3: Cross multiply
   5,498.40x = 7,588.32 × 3,140.72
4. Step 4: Simplify right side
   5,498.40x = 23,832,788.39
5. Step 5: Solve for x
   x = 23,832,788.39/5,498.40
6. Step 6: Final answer
   x = 4,334.50