Finding the Fourth Proportional to 7,127.19, 10,690.27 and 2,196.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,127.19 : 10,690.27 = 2,196.31 : x
2. Step 2: Convert to fraction form
   7,127.19/10,690.27 = 2,196.31/x
3. Step 3: Cross multiply
   7,127.19x = 10,690.27 × 2,196.31
4. Step 4: Simplify right side
   7,127.19x = 23,479,146.90
5. Step 5: Solve for x
   x = 23,479,146.90/7,127.19
6. Step 6: Final answer
   x = 3,294.31