Finding the Fourth Proportional to 12,763.72, 17,613.84 and 7,174.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,763.72 : 17,613.84 = 7,174.72 : x
2. Step 2: Convert to fraction form
   12,763.72/17,613.84 = 7,174.72/x
3. Step 3: Cross multiply
   12,763.72x = 17,613.84 × 7,174.72
4. Step 4: Simplify right side
   12,763.72x = 126,374,370.12
5. Step 5: Solve for x
   x = 126,374,370.12/12,763.72
6. Step 6: Final answer
   x = 9,901.06