Finding the Fourth Proportional to 14,388.24, 21,580.64 and 3,859.10

Step by Step Solution

1. Step 1: Write the proportion equation
   14,388.24 : 21,580.64 = 3,859.10 : x
2. Step 2: Convert to fraction form
   14,388.24/21,580.64 = 3,859.10/x
3. Step 3: Cross multiply
   14,388.24x = 21,580.64 × 3,859.10
4. Step 4: Simplify right side
   14,388.24x = 83,281,847.82
5. Step 5: Solve for x
   x = 83,281,847.82/14,388.24
6. Step 6: Final answer
   x = 5,788.19