Finding the Fourth Proportional to 9,819.61, 14,729.37 and 3,980.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819.61 : 14,729.37 = 3,980.32 : x
2. Step 2: Convert to fraction form
   9,819.61/14,729.37 = 3,980.32/x
3. Step 3: Cross multiply
   9,819.61x = 14,729.37 × 3,980.32
4. Step 4: Simplify right side
   9,819.61x = 58,627,606.00
5. Step 5: Solve for x
   x = 58,627,606.00/9,819.61
6. Step 6: Final answer
   x = 5,970.46