Finding the Fourth Proportional to 5,290.56, 7,303.86 and 3,498.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,290.56 : 7,303.86 = 3,498.12 : x
2. Step 2: Convert to fraction form
   5,290.56/7,303.86 = 3,498.12/x
3. Step 3: Cross multiply
   5,290.56x = 7,303.86 × 3,498.12
4. Step 4: Simplify right side
   5,290.56x = 25,549,778.74
5. Step 5: Solve for x
   x = 25,549,778.74/5,290.56
6. Step 6: Final answer
   x = 4,829.31