Finding the Fourth Proportional to 11,667.68, 17,498.52 and 4,272.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,667.68 : 17,498.52 = 4,272.80 : x
2. Step 2: Convert to fraction form
   11,667.68/17,498.52 = 4,272.80/x
3. Step 3: Cross multiply
   11,667.68x = 17,498.52 × 4,272.80
4. Step 4: Simplify right side
   11,667.68x = 74,767,676.26
5. Step 5: Solve for x
   x = 74,767,676.26/11,667.68
6. Step 6: Final answer
   x = 6,408.10