Finding the Fourth Proportional to 12,314.04, 16,989.36 and 7,278.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,314.04 : 16,989.36 = 7,278.42 : x
2. Step 2: Convert to fraction form
   12,314.04/16,989.36 = 7,278.42/x
3. Step 3: Cross multiply
   12,314.04x = 16,989.36 × 7,278.42
4. Step 4: Simplify right side
   12,314.04x = 123,655,697.61
5. Step 5: Solve for x
   x = 123,655,697.61/12,314.04
6. Step 6: Final answer
   x = 10,041.85