Finding the Fourth Proportional to 14,308.83, 21,459.33 and 5,987.07

Step by Step Solution

1. Step 1: Write the proportion equation
   14,308.83 : 21,459.33 = 5,987.07 : x
2. Step 2: Convert to fraction form
   14,308.83/21,459.33 = 5,987.07/x
3. Step 3: Cross multiply
   14,308.83x = 21,459.33 × 5,987.07
4. Step 4: Simplify right side
   14,308.83x = 128,478,510.86
5. Step 5: Solve for x
   x = 128,478,510.86/14,308.83
6. Step 6: Final answer
   x = 8,978.97