Finding the Fourth Proportional to 13,747.86, 18,973.89 and 8,159.22

Step by Step Solution

1. Step 1: Write the proportion equation
   13,747.86 : 18,973.89 = 8,159.22 : x
2. Step 2: Convert to fraction form
   13,747.86/18,973.89 = 8,159.22/x
3. Step 3: Cross multiply
   13,747.86x = 18,973.89 × 8,159.22
4. Step 4: Simplify right side
   13,747.86x = 154,812,142.77
5. Step 5: Solve for x
   x = 154,812,142.77/13,747.86
6. Step 6: Final answer
   x = 11,260.82