Finding the Fourth Proportional to 9,659.61, 14,458.10 and 5,211.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,659.61 : 14,458.10 = 5,211.09 : x
2. Step 2: Convert to fraction form
   9,659.61/14,458.10 = 5,211.09/x
3. Step 3: Cross multiply
   9,659.61x = 14,458.10 × 5,211.09
4. Step 4: Simplify right side
   9,659.61x = 75,342,434.27
5. Step 5: Solve for x
   x = 75,342,434.27/9,659.61
6. Step 6: Final answer
   x = 7,799.74