Finding the Fourth Proportional to 12,380.37, 18,555 and 4,980.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,380.37 : 18,555 = 4,980.72 : x
2. Step 2: Convert to fraction form
   12,380.37/18,555 = 4,980.72/x
3. Step 3: Cross multiply
   12,380.37x = 18,555 × 4,980.72
4. Step 4: Simplify right side
   12,380.37x = 92,417,259.60
5. Step 5: Solve for x
   x = 92,417,259.60/12,380.37
6. Step 6: Final answer
   x = 7,464.82