Finding the Fourth Proportional to 7,317.48, 10,978.02 and 2,123.28

Step by Step Solution

1. Step 1: Write the proportion equation
   7,317.48 : 10,978.02 = 2,123.28 : x
2. Step 2: Convert to fraction form
   7,317.48/10,978.02 = 2,123.28/x
3. Step 3: Cross multiply
   7,317.48x = 10,978.02 × 2,123.28
4. Step 4: Simplify right side
   7,317.48x = 23,309,410.31
5. Step 5: Solve for x
   x = 23,309,410.31/7,317.48
6. Step 6: Final answer
   x = 3,185.44