Finding the Fourth Proportional to 11,445.86, 17,172.06 and 3,655.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,445.86 : 17,172.06 = 3,655.28 : x
2. Step 2: Convert to fraction form
   11,445.86/17,172.06 = 3,655.28/x
3. Step 3: Cross multiply
   11,445.86x = 17,172.06 × 3,655.28
4. Step 4: Simplify right side
   11,445.86x = 62,768,687.48
5. Step 5: Solve for x
   x = 62,768,687.48/11,445.86
6. Step 6: Final answer
   x = 5,483.96