Finding the Fourth Proportional to 17,085.80, 25,631.34 and 7,225.12

Step by Step Solution

1. Step 1: Write the proportion equation
   17,085.80 : 25,631.34 = 7,225.12 : x
2. Step 2: Convert to fraction form
   17,085.80/25,631.34 = 7,225.12/x
3. Step 3: Cross multiply
   17,085.80x = 25,631.34 × 7,225.12
4. Step 4: Simplify right side
   17,085.80x = 185,189,507.26
5. Step 5: Solve for x
   x = 185,189,507.26/17,085.80
6. Step 6: Final answer
   x = 10,838.80