Finding the Fourth Proportional to 12,435.71, 17,162.82 and 7,130.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,435.71 : 17,162.82 = 7,130.43 : x
2. Step 2: Convert to fraction form
   12,435.71/17,162.82 = 7,130.43/x
3. Step 3: Cross multiply
   12,435.71x = 17,162.82 × 7,130.43
4. Step 4: Simplify right side
   12,435.71x = 122,378,286.61
5. Step 5: Solve for x
   x = 122,378,286.61/12,435.71
6. Step 6: Final answer
   x = 9,840.88