Finding the Fourth Proportional to 11,618.72, 17,426.64 and 4,222.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,618.72 : 17,426.64 = 4,222.88 : x
2. Step 2: Convert to fraction form
   11,618.72/17,426.64 = 4,222.88/x
3. Step 3: Cross multiply
   11,618.72x = 17,426.64 × 4,222.88
4. Step 4: Simplify right side
   11,618.72x = 73,590,609.52
5. Step 5: Solve for x
   x = 73,590,609.52/11,618.72
6. Step 6: Final answer
   x = 6,333.80