Finding the Fourth Proportional to 14,298.75, 21,449.61 and 3,910.50

Step by Step Solution

1. Step 1: Write the proportion equation
   14,298.75 : 21,449.61 = 3,910.50 : x
2. Step 2: Convert to fraction form
   14,298.75/21,449.61 = 3,910.50/x
3. Step 3: Cross multiply
   14,298.75x = 21,449.61 × 3,910.50
4. Step 4: Simplify right side
   14,298.75x = 83,878,699.91
5. Step 5: Solve for x
   x = 83,878,699.91/14,298.75
6. Step 6: Final answer
   x = 5,866.16