Finding the Fourth Proportional to 13,116.90, 18,115.98 and 10,168.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,116.90 : 18,115.98 = 10,168.38 : x
2. Step 2: Convert to fraction form
   13,116.90/18,115.98 = 10,168.38/x
3. Step 3: Cross multiply
   13,116.90x = 18,115.98 × 10,168.38
4. Step 4: Simplify right side
   13,116.90x = 184,210,168.71
5. Step 5: Solve for x
   x = 184,210,168.71/13,116.90
6. Step 6: Final answer
   x = 14,043.73