Finding the Fourth Proportional to 9,611.62, 14,407.53 and 3,686.89

Step by Step Solution

1. Step 1: Write the proportion equation
   9,611.62 : 14,407.53 = 3,686.89 : x
2. Step 2: Convert to fraction form
   9,611.62/14,407.53 = 3,686.89/x
3. Step 3: Cross multiply
   9,611.62x = 14,407.53 × 3,686.89
4. Step 4: Simplify right side
   9,611.62x = 53,118,978.28
5. Step 5: Solve for x
   x = 53,118,978.28/9,611.62
6. Step 6: Final answer
   x = 5,526.54