Finding the Fourth Proportional to 14,311.42, 19,749.93 and 7,938.15

Step by Step Solution

1. Step 1: Write the proportion equation
   14,311.42 : 19,749.93 = 7,938.15 : x
2. Step 2: Convert to fraction form
   14,311.42/19,749.93 = 7,938.15/x
3. Step 3: Cross multiply
   14,311.42x = 19,749.93 × 7,938.15
4. Step 4: Simplify right side
   14,311.42x = 156,777,906.83
5. Step 5: Solve for x
   x = 156,777,906.83/14,311.42
6. Step 6: Final answer
   x = 10,954.74