Finding the Fourth Proportional to 12,994.12, 17,932.08 and 7,405

Step by Step Solution

1. Step 1: Write the proportion equation
   12,994.12 : 17,932.08 = 7,405 : x
2. Step 2: Convert to fraction form
   12,994.12/17,932.08 = 7,405/x
3. Step 3: Cross multiply
   12,994.12x = 17,932.08 × 7,405
4. Step 4: Simplify right side
   12,994.12x = 132,787,052.40
5. Step 5: Solve for x
   x = 132,787,052.40/12,994.12
6. Step 6: Final answer
   x = 10,219.01