Finding the Fourth Proportional to 12,867.48, 19,300.74 and 4,659.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,867.48 : 19,300.74 = 4,659.48 : x
2. Step 2: Convert to fraction form
   12,867.48/19,300.74 = 4,659.48/x
3. Step 3: Cross multiply
   12,867.48x = 19,300.74 × 4,659.48
4. Step 4: Simplify right side
   12,867.48x = 89,931,412.02
5. Step 5: Solve for x
   x = 89,931,412.02/12,867.48
6. Step 6: Final answer
   x = 6,989.05