Finding the Fourth Proportional to 14,118.39, 21,173.16 and 5,111.36

Step by Step Solution

1. Step 1: Write the proportion equation
   14,118.39 : 21,173.16 = 5,111.36 : x
2. Step 2: Convert to fraction form
   14,118.39/21,173.16 = 5,111.36/x
3. Step 3: Cross multiply
   14,118.39x = 21,173.16 × 5,111.36
4. Step 4: Simplify right side
   14,118.39x = 108,223,696.03
5. Step 5: Solve for x
   x = 108,223,696.03/14,118.39
6. Step 6: Final answer
   x = 7,665.44