Finding the Fourth Proportional to 12,763.76, 17,613.80 and 7,174.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,763.76 : 17,613.80 = 7,174.72 : x
2. Step 2: Convert to fraction form
   12,763.76/17,613.80 = 7,174.72/x
3. Step 3: Cross multiply
   12,763.76x = 17,613.80 × 7,174.72
4. Step 4: Simplify right side
   12,763.76x = 126,374,083.14
5. Step 5: Solve for x
   x = 126,374,083.14/12,763.76
6. Step 6: Final answer
   x = 9,901.01