Finding the Fourth Proportional to 11,436.60, 17,156.16 and 3,643.64

Step by Step Solution

1. Step 1: Write the proportion equation
   11,436.60 : 17,156.16 = 3,643.64 : x
2. Step 2: Convert to fraction form
   11,436.60/17,156.16 = 3,643.64/x
3. Step 3: Cross multiply
   11,436.60x = 17,156.16 × 3,643.64
4. Step 4: Simplify right side
   11,436.60x = 62,510,870.82
5. Step 5: Solve for x
   x = 62,510,870.82/11,436.60
6. Step 6: Final answer
   x = 5,465.86