Finding the Fourth Proportional to 11,557.74, 17,348.52 and 7,118.58

Step by Step Solution

1. Step 1: Write the proportion equation
   11,557.74 : 17,348.52 = 7,118.58 : x
2. Step 2: Convert to fraction form
   11,557.74/17,348.52 = 7,118.58/x
3. Step 3: Cross multiply
   11,557.74x = 17,348.52 × 7,118.58
4. Step 4: Simplify right side
   11,557.74x = 123,496,827.50
5. Step 5: Solve for x
   x = 123,496,827.50/11,557.74
6. Step 6: Final answer
   x = 10,685.21