Finding the Fourth Proportional to 12,116.96, 16,722.28 and 7,402.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,116.96 : 16,722.28 = 7,402.14 : x
2. Step 2: Convert to fraction form
   12,116.96/16,722.28 = 7,402.14/x
3. Step 3: Cross multiply
   12,116.96x = 16,722.28 × 7,402.14
4. Step 4: Simplify right side
   12,116.96x = 123,780,657.68
5. Step 5: Solve for x
   x = 123,780,657.68/12,116.96
6. Step 6: Final answer
   x = 10,215.49