Finding the Fourth Proportional to 9,478.54, 14,221.50 and 3,930.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,478.54 : 14,221.50 = 3,930.47 : x
2. Step 2: Convert to fraction form
   9,478.54/14,221.50 = 3,930.47/x
3. Step 3: Cross multiply
   9,478.54x = 14,221.50 × 3,930.47
4. Step 4: Simplify right side
   9,478.54x = 55,897,146.59
5. Step 5: Solve for x
   x = 55,897,146.59/9,478.54
6. Step 6: Final answer
   x = 5,897.23