Finding the Fourth Proportional to 17,168.72, 25,746.60 and 7,312.64

Step by Step Solution

1. Step 1: Write the proportion equation
   17,168.72 : 25,746.60 = 7,312.64 : x
2. Step 2: Convert to fraction form
   17,168.72/25,746.60 = 7,312.64/x
3. Step 3: Cross multiply
   17,168.72x = 25,746.60 × 7,312.64
4. Step 4: Simplify right side
   17,168.72x = 188,275,617.02
5. Step 5: Solve for x
   x = 188,275,617.02/17,168.72
6. Step 6: Final answer
   x = 10,966.20