Finding the Fourth Proportional to 16,669.12, 25,009.48 and 8,347.28

Step by Step Solution

1. Step 1: Write the proportion equation
   16,669.12 : 25,009.48 = 8,347.28 : x
2. Step 2: Convert to fraction form
   16,669.12/25,009.48 = 8,347.28/x
3. Step 3: Cross multiply
   16,669.12x = 25,009.48 × 8,347.28
4. Step 4: Simplify right side
   16,669.12x = 208,761,111.42
5. Step 5: Solve for x
   x = 208,761,111.42/16,669.12
6. Step 6: Final answer
   x = 12,523.83