Finding the Fourth Proportional to 9,819.09, 14,720.00 and 3,900.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819.09 : 14,720.00 = 3,900.15 : x
2. Step 2: Convert to fraction form
   9,819.09/14,720.00 = 3,900.15/x
3. Step 3: Cross multiply
   9,819.09x = 14,720.00 × 3,900.15
4. Step 4: Simplify right side
   9,819.09x = 57,410,188.50
5. Step 5: Solve for x
   x = 57,410,188.50/9,819.09
6. Step 6: Final answer
   x = 5,846.79