Finding the Fourth Proportional to 14,145.56, 21,216.72 and 3,758.12

Step by Step Solution

1. Step 1: Write the proportion equation
   14,145.56 : 21,216.72 = 3,758.12 : x
2. Step 2: Convert to fraction form
   14,145.56/21,216.72 = 3,758.12/x
3. Step 3: Cross multiply
   14,145.56x = 21,216.72 × 3,758.12
4. Step 4: Simplify right side
   14,145.56x = 79,734,979.77
5. Step 5: Solve for x
   x = 79,734,979.77/14,145.56
6. Step 6: Final answer
   x = 5,636.75