Finding the Fourth Proportional to 7,371.60, 11,057.72 and 3,426.56

Step by Step Solution

1. Step 1: Write the proportion equation
   7,371.60 : 11,057.72 = 3,426.56 : x
2. Step 2: Convert to fraction form
   7,371.60/11,057.72 = 3,426.56/x
3. Step 3: Cross multiply
   7,371.60x = 11,057.72 × 3,426.56
4. Step 4: Simplify right side
   7,371.60x = 37,889,941.04
5. Step 5: Solve for x
   x = 37,889,941.04/7,371.60
6. Step 6: Final answer
   x = 5,139.99