Finding the Fourth Proportional to 12,426.32, 17,147.72 and 6,837.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,426.32 : 17,147.72 = 6,837.20 : x
2. Step 2: Convert to fraction form
   12,426.32/17,147.72 = 6,837.20/x
3. Step 3: Cross multiply
   12,426.32x = 17,147.72 × 6,837.20
4. Step 4: Simplify right side
   12,426.32x = 117,242,391.18
5. Step 5: Solve for x
   x = 117,242,391.18/12,426.32
6. Step 6: Final answer
   x = 9,435.00