Finding the Fourth Proportional to 11,188.64, 16,781.69 and 2,868.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,188.64 : 16,781.69 = 2,868.72 : x
2. Step 2: Convert to fraction form
   11,188.64/16,781.69 = 2,868.72/x
3. Step 3: Cross multiply
   11,188.64x = 16,781.69 × 2,868.72
4. Step 4: Simplify right side
   11,188.64x = 48,141,955.39
5. Step 5: Solve for x
   x = 48,141,955.39/11,188.64
6. Step 6: Final answer
   x = 4,302.76