Finding the Fourth Proportional to 14,308.18, 21,459.96 and 3,917.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,308.18 : 21,459.96 = 3,917.50 : x
2. Step 2: Convert to fraction form
   14,308.18/21,459.96 = 3,917.50/x
3. Step 3: Cross multiply
   14,308.18x = 21,459.96 × 3,917.50
4. Step 4: Simplify right side
   14,308.18x = 84,069,393.30
5. Step 5: Solve for x
   x = 84,069,393.30/14,308.18
6. Step 6: Final answer
   x = 5,875.62