Finding the Fourth Proportional to 11,342.80, 17,016.76 and 5,188.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,342.80 : 17,016.76 = 5,188.56 : x
2. Step 2: Convert to fraction form
   11,342.80/17,016.76 = 5,188.56/x
3. Step 3: Cross multiply
   11,342.80x = 17,016.76 × 5,188.56
4. Step 4: Simplify right side
   11,342.80x = 88,292,480.27
5. Step 5: Solve for x
   x = 88,292,480.27/11,342.80
6. Step 6: Final answer
   x = 7,784.01