Finding the Fourth Proportional to 9,781.84, 14,673.59 and 3,119.29

Step by Step Solution

1. Step 1: Write the proportion equation
   9,781.84 : 14,673.59 = 3,119.29 : x
2. Step 2: Convert to fraction form
   9,781.84/14,673.59 = 3,119.29/x
3. Step 3: Cross multiply
   9,781.84x = 14,673.59 × 3,119.29
4. Step 4: Simplify right side
   9,781.84x = 45,771,238.34
5. Step 5: Solve for x
   x = 45,771,238.34/9,781.84
6. Step 6: Final answer
   x = 4,679.20