Finding the Fourth Proportional to 12,597.72, 18,878.69 and 5,931.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,597.72 : 18,878.69 = 5,931.70 : x
2. Step 2: Convert to fraction form
   12,597.72/18,878.69 = 5,931.70/x
3. Step 3: Cross multiply
   12,597.72x = 18,878.69 × 5,931.70
4. Step 4: Simplify right side
   12,597.72x = 111,982,725.47
5. Step 5: Solve for x
   x = 111,982,725.47/12,597.72
6. Step 6: Final answer
   x = 8,889.13