Finding the Fourth Proportional to 16,980.08, 23,384.06 and 12,256.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,980.08 : 23,384.06 = 12,256.88 : x
2. Step 2: Convert to fraction form
   16,980.08/23,384.06 = 12,256.88/x
3. Step 3: Cross multiply
   16,980.08x = 23,384.06 × 12,256.88
4. Step 4: Simplify right side
   16,980.08x = 286,615,617.33
5. Step 5: Solve for x
   x = 286,615,617.33/16,980.08
6. Step 6: Final answer
   x = 16,879.52