Finding the Fourth Proportional to 12,419.58, 17,140.48 and 7,116.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,419.58 : 17,140.48 = 7,116.10 : x
2. Step 2: Convert to fraction form
   12,419.58/17,140.48 = 7,116.10/x
3. Step 3: Cross multiply
   12,419.58x = 17,140.48 × 7,116.10
4. Step 4: Simplify right side
   12,419.58x = 121,973,369.73
5. Step 5: Solve for x
   x = 121,973,369.73/12,419.58
6. Step 6: Final answer
   x = 9,821.05