Finding the Fourth Proportional to 9,819.31, 14,729.29 and 3,897.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819.31 : 14,729.29 = 3,897.30 : x
2. Step 2: Convert to fraction form
   9,819.31/14,729.29 = 3,897.30/x
3. Step 3: Cross multiply
   9,819.31x = 14,729.29 × 3,897.30
4. Step 4: Simplify right side
   9,819.31x = 57,404,461.92
5. Step 5: Solve for x
   x = 57,404,461.92/9,819.31
6. Step 6: Final answer
   x = 5,846.08