Finding the Fourth Proportional to 12,188.06, 18,275.18 and 4,788.48

Step by Step Solution

1. Step 1: Write the proportion equation
   12,188.06 : 18,275.18 = 4,788.48 : x
2. Step 2: Convert to fraction form
   12,188.06/18,275.18 = 4,788.48/x
3. Step 3: Cross multiply
   12,188.06x = 18,275.18 × 4,788.48
4. Step 4: Simplify right side
   12,188.06x = 87,510,333.93
5. Step 5: Solve for x
   x = 87,510,333.93/12,188.06
6. Step 6: Final answer
   x = 7,180.01