Finding the Fourth Proportional to 12,470.67, 17,211.72 and 7,435.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,470.67 : 17,211.72 = 7,435.20 : x
2. Step 2: Convert to fraction form
   12,470.67/17,211.72 = 7,435.20/x
3. Step 3: Cross multiply
   12,470.67x = 17,211.72 × 7,435.20
4. Step 4: Simplify right side
   12,470.67x = 127,972,580.54
5. Step 5: Solve for x
   x = 127,972,580.54/12,470.67
6. Step 6: Final answer
   x = 10,261.88