Finding the Fourth Proportional to 5,625.30, 8,420.25 and 3,859.99

Step by Step Solution

1. Step 1: Write the proportion equation
   5,625.30 : 8,420.25 = 3,859.99 : x
2. Step 2: Convert to fraction form
   5,625.30/8,420.25 = 3,859.99/x
3. Step 3: Cross multiply
   5,625.30x = 8,420.25 × 3,859.99
4. Step 4: Simplify right side
   5,625.30x = 32,502,056.46
5. Step 5: Solve for x
   x = 32,502,056.46/5,625.30
6. Step 6: Final answer
   x = 5,777.83