Finding the Fourth Proportional to 11,428.35, 17,144.67 and 5,188.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,428.35 : 17,144.67 = 5,188.82 : x
2. Step 2: Convert to fraction form
   11,428.35/17,144.67 = 5,188.82/x
3. Step 3: Cross multiply
   11,428.35x = 17,144.67 × 5,188.82
4. Step 4: Simplify right side
   11,428.35x = 88,960,520.87
5. Step 5: Solve for x
   x = 88,960,520.87/11,428.35
6. Step 6: Final answer
   x = 7,784.20