Finding the Fourth Proportional to 13,144.17, 19,705.79 and 7,591.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,144.17 : 19,705.79 = 7,591.23 : x
2. Step 2: Convert to fraction form
   13,144.17/19,705.79 = 7,591.23/x
3. Step 3: Cross multiply
   13,144.17x = 19,705.79 × 7,591.23
4. Step 4: Simplify right side
   13,144.17x = 149,591,146.27
5. Step 5: Solve for x
   x = 149,591,146.27/13,144.17
6. Step 6: Final answer
   x = 11,380.80