Finding the Fourth Proportional to 12,499.40, 18,749.72 and 4,179.08

Step by Step Solution

1. Step 1: Write the proportion equation
   12,499.40 : 18,749.72 = 4,179.08 : x
2. Step 2: Convert to fraction form
   12,499.40/18,749.72 = 4,179.08/x
3. Step 3: Cross multiply
   12,499.40x = 18,749.72 × 4,179.08
4. Step 4: Simplify right side
   12,499.40x = 78,356,579.86
5. Step 5: Solve for x
   x = 78,356,579.86/12,499.40
6. Step 6: Final answer
   x = 6,268.83