Finding the Fourth Proportional to 12,297.89, 18,448.86 and 3,980.00

Step by Step Solution

1. Step 1: Write the proportion equation
   12,297.89 : 18,448.86 = 3,980.00 : x
2. Step 2: Convert to fraction form
   12,297.89/18,448.86 = 3,980.00/x
3. Step 3: Cross multiply
   12,297.89x = 18,448.86 × 3,980.00
4. Step 4: Simplify right side
   12,297.89x = 73,426,416.68
5. Step 5: Solve for x
   x = 73,426,416.68/12,297.89
6. Step 6: Final answer
   x = 5,970.65