Finding the Fourth Proportional to 9,478.84, 14,217.60 and 3,930.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,478.84 : 14,217.60 = 3,930.76 : x
2. Step 2: Convert to fraction form
   9,478.84/14,217.60 = 3,930.76/x
3. Step 3: Cross multiply
   9,478.84x = 14,217.60 × 3,930.76
4. Step 4: Simplify right side
   9,478.84x = 55,885,973.38
5. Step 5: Solve for x
   x = 55,885,973.38/9,478.84
6. Step 6: Final answer
   x = 5,895.87