Finding the Fourth Proportional to 10,216.02, 14,088.69 and 6,438.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,216.02 : 14,088.69 = 6,438.18 : x
2. Step 2: Convert to fraction form
   10,216.02/14,088.69 = 6,438.18/x
3. Step 3: Cross multiply
   10,216.02x = 14,088.69 × 6,438.18
4. Step 4: Simplify right side
   10,216.02x = 90,705,522.18
5. Step 5: Solve for x
   x = 90,705,522.18/10,216.02
6. Step 6: Final answer
   x = 8,878.75