Finding the Fourth Proportional to 14,111.56, 21,165.16 and 3,724.12

Step by Step Solution

1. Step 1: Write the proportion equation
   14,111.56 : 21,165.16 = 3,724.12 : x
2. Step 2: Convert to fraction form
   14,111.56/21,165.16 = 3,724.12/x
3. Step 3: Cross multiply
   14,111.56x = 21,165.16 × 3,724.12
4. Step 4: Simplify right side
   14,111.56x = 78,821,595.66
5. Step 5: Solve for x
   x = 78,821,595.66/14,111.56
6. Step 6: Final answer
   x = 5,585.60