Finding the Fourth Proportional to 14,045.72, 21,079.46 and 5,288.60

Step by Step Solution

1. Step 1: Write the proportion equation
   14,045.72 : 21,079.46 = 5,288.60 : x
2. Step 2: Convert to fraction form
   14,045.72/21,079.46 = 5,288.60/x
3. Step 3: Cross multiply
   14,045.72x = 21,079.46 × 5,288.60
4. Step 4: Simplify right side
   14,045.72x = 111,480,832.16
5. Step 5: Solve for x
   x = 111,480,832.16/14,045.72
6. Step 6: Final answer
   x = 7,937.00