Finding the Fourth Proportional to 12,176.93, 18,258.34 and 4,772.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,176.93 : 18,258.34 = 4,772.72 : x
2. Step 2: Convert to fraction form
   12,176.93/18,258.34 = 4,772.72/x
3. Step 3: Cross multiply
   12,176.93x = 18,258.34 × 4,772.72
4. Step 4: Simplify right side
   12,176.93x = 87,141,944.48
5. Step 5: Solve for x
   x = 87,141,944.48/12,176.93
6. Step 6: Final answer
   x = 7,156.31