Finding the Fourth Proportional to 9,784.48, 14,685.36 and 5,170.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,784.48 : 14,685.36 = 5,170.72 : x
2. Step 2: Convert to fraction form
   9,784.48/14,685.36 = 5,170.72/x
3. Step 3: Cross multiply
   9,784.48x = 14,685.36 × 5,170.72
4. Step 4: Simplify right side
   9,784.48x = 75,933,884.66
5. Step 5: Solve for x
   x = 75,933,884.66/9,784.48
6. Step 6: Final answer
   x = 7,760.65