Finding the Fourth Proportional to 11,392.80, 17,100.15 and 5,553.51

Step by Step Solution

1. Step 1: Write the proportion equation
   11,392.80 : 17,100.15 = 5,553.51 : x
2. Step 2: Convert to fraction form
   11,392.80/17,100.15 = 5,553.51/x
3. Step 3: Cross multiply
   11,392.80x = 17,100.15 × 5,553.51
4. Step 4: Simplify right side
   11,392.80x = 94,965,896.78
5. Step 5: Solve for x
   x = 94,965,896.78/11,392.80
6. Step 6: Final answer
   x = 8,335.60