Finding the Fourth Proportional to 14,311.81, 19,750.61 and 7,938.19

Step by Step Solution

1. Step 1: Write the proportion equation
   14,311.81 : 19,750.61 = 7,938.19 : x
2. Step 2: Convert to fraction form
   14,311.81/19,750.61 = 7,938.19/x
3. Step 3: Cross multiply
   14,311.81x = 19,750.61 × 7,938.19
4. Step 4: Simplify right side
   14,311.81x = 156,784,111.13
5. Step 5: Solve for x
   x = 156,784,111.13/14,311.81
6. Step 6: Final answer
   x = 10,954.88