Finding the Fourth Proportional to 9,656.80, 14,478.72 and 3,810.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,656.80 : 14,478.72 = 3,810.40 : x
2. Step 2: Convert to fraction form
   9,656.80/14,478.72 = 3,810.40/x
3. Step 3: Cross multiply
   9,656.80x = 14,478.72 × 3,810.40
4. Step 4: Simplify right side
   9,656.80x = 55,169,714.69
5. Step 5: Solve for x
   x = 55,169,714.69/9,656.80
6. Step 6: Final answer
   x = 5,713.04