Finding the Fourth Proportional to 11,455.48, 17,185.90 and 3,557.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,455.48 : 17,185.90 = 3,557.59 : x
2. Step 2: Convert to fraction form
   11,455.48/17,185.90 = 3,557.59/x
3. Step 3: Cross multiply
   11,455.48x = 17,185.90 × 3,557.59
4. Step 4: Simplify right side
   11,455.48x = 61,140,385.98
5. Step 5: Solve for x
   x = 61,140,385.98/11,455.48
6. Step 6: Final answer
   x = 5,337.22