Finding the Fourth Proportional to 17,081.32, 25,624.72 and 7,220.70

Step by Step Solution

1. Step 1: Write the proportion equation
   17,081.32 : 25,624.72 = 7,220.70 : x
2. Step 2: Convert to fraction form
   17,081.32/25,624.72 = 7,220.70/x
3. Step 3: Cross multiply
   17,081.32x = 25,624.72 × 7,220.70
4. Step 4: Simplify right side
   17,081.32x = 185,028,415.70
5. Step 5: Solve for x
   x = 185,028,415.70/17,081.32
6. Step 6: Final answer
   x = 10,832.21