Finding the Fourth Proportional to 9,656.98, 14,407.79 and 8,604.45

Step by Step Solution

1. Step 1: Write the proportion equation
   9,656.98 : 14,407.79 = 8,604.45 : x
2. Step 2: Convert to fraction form
   9,656.98/14,407.79 = 8,604.45/x
3. Step 3: Cross multiply
   9,656.98x = 14,407.79 × 8,604.45
4. Step 4: Simplify right side
   9,656.98x = 123,971,065.64
5. Step 5: Solve for x
   x = 123,971,065.64/9,656.98
6. Step 6: Final answer
   x = 12,837.46