Finding the Fourth Proportional to 10,705.72, 16,018.26 and 7,425.16

Step by Step Solution

1. Step 1: Write the proportion equation
   10,705.72 : 16,018.26 = 7,425.16 : x
2. Step 2: Convert to fraction form
   10,705.72/16,018.26 = 7,425.16/x
3. Step 3: Cross multiply
   10,705.72x = 16,018.26 × 7,425.16
4. Step 4: Simplify right side
   10,705.72x = 118,938,143.42
5. Step 5: Solve for x
   x = 118,938,143.42/10,705.72
6. Step 6: Final answer
   x = 11,109.78