Finding the Fourth Proportional to 9,685.44, 14,530.86 and 4,139.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,685.44 : 14,530.86 = 4,139.10 : x
2. Step 2: Convert to fraction form
   9,685.44/14,530.86 = 4,139.10/x
3. Step 3: Cross multiply
   9,685.44x = 14,530.86 × 4,139.10
4. Step 4: Simplify right side
   9,685.44x = 60,144,682.63
5. Step 5: Solve for x
   x = 60,144,682.63/9,685.44
6. Step 6: Final answer
   x = 6,209.80