Finding the Fourth Proportional to 9,681.76, 14,521.86 and 3,106.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,681.76 : 14,521.86 = 3,106.20 : x
2. Step 2: Convert to fraction form
   9,681.76/14,521.86 = 3,106.20/x
3. Step 3: Cross multiply
   9,681.76x = 14,521.86 × 3,106.20
4. Step 4: Simplify right side
   9,681.76x = 45,107,801.53
5. Step 5: Solve for x
   x = 45,107,801.53/9,681.76
6. Step 6: Final answer
   x = 4,659.05