Finding the Fourth Proportional to 8,663.72, 12,994.14 and 3,116.03

Step by Step Solution

1. Step 1: Write the proportion equation
   8,663.72 : 12,994.14 = 3,116.03 : x
2. Step 2: Convert to fraction form
   8,663.72/12,994.14 = 3,116.03/x
3. Step 3: Cross multiply
   8,663.72x = 12,994.14 × 3,116.03
4. Step 4: Simplify right side
   8,663.72x = 40,490,065.09
5. Step 5: Solve for x
   x = 40,490,065.09/8,663.72
6. Step 6: Final answer
   x = 4,673.52