Finding the Fourth Proportional to 10,763.40, 16,142.04 and 4,188.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,763.40 : 16,142.04 = 4,188.06 : x
2. Step 2: Convert to fraction form
   10,763.40/16,142.04 = 4,188.06/x
3. Step 3: Cross multiply
   10,763.40x = 16,142.04 × 4,188.06
4. Step 4: Simplify right side
   10,763.40x = 67,603,832.04
5. Step 5: Solve for x
   x = 67,603,832.04/10,763.40
6. Step 6: Final answer
   x = 6,280.90