Finding the Fourth Proportional to 12,378.12, 18,562.59 and 4,980.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,378.12 : 18,562.59 = 4,980.05 : x
2. Step 2: Convert to fraction form
   12,378.12/18,562.59 = 4,980.05/x
3. Step 3: Cross multiply
   12,378.12x = 18,562.59 × 4,980.05
4. Step 4: Simplify right side
   12,378.12x = 92,442,626.33
5. Step 5: Solve for x
   x = 92,442,626.33/12,378.12
6. Step 6: Final answer
   x = 7,468.23