Finding the Fourth Proportional to 13,187.59, 19,767.71 and 8,245.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,187.59 : 19,767.71 = 8,245.88 : x
2. Step 2: Convert to fraction form
   13,187.59/19,767.71 = 8,245.88/x
3. Step 3: Cross multiply
   13,187.59x = 19,767.71 × 8,245.88
4. Step 4: Simplify right side
   13,187.59x = 163,002,094.50
5. Step 5: Solve for x
   x = 163,002,094.50/13,187.59
6. Step 6: Final answer
   x = 12,360.27