Finding the Fourth Proportional to 8,876.24, 13,316.28 and 2,636.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,876.24 : 13,316.28 = 2,636.72 : x
2. Step 2: Convert to fraction form
   8,876.24/13,316.28 = 2,636.72/x
3. Step 3: Cross multiply
   8,876.24x = 13,316.28 × 2,636.72
4. Step 4: Simplify right side
   8,876.24x = 35,111,301.80
5. Step 5: Solve for x
   x = 35,111,301.80/8,876.24
6. Step 6: Final answer
   x = 3,955.65