Finding the Fourth Proportional to 5,275.32, 7,279.56 and 2,917.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,275.32 : 7,279.56 = 2,917.50 : x
2. Step 2: Convert to fraction form
   5,275.32/7,279.56 = 2,917.50/x
3. Step 3: Cross multiply
   5,275.32x = 7,279.56 × 2,917.50
4. Step 4: Simplify right side
   5,275.32x = 21,238,116.30
5. Step 5: Solve for x
   x = 21,238,116.30/5,275.32
6. Step 6: Final answer
   x = 4,025.94