Finding the Fourth Proportional to 7,112.22, 10,667.04 and 1,916.88

Step by Step Solution

1. Step 1: Write the proportion equation
   7,112.22 : 10,667.04 = 1,916.88 : x
2. Step 2: Convert to fraction form
   7,112.22/10,667.04 = 1,916.88/x
3. Step 3: Cross multiply
   7,112.22x = 10,667.04 × 1,916.88
4. Step 4: Simplify right side
   7,112.22x = 20,447,435.64
5. Step 5: Solve for x
   x = 20,447,435.64/7,112.22
6. Step 6: Final answer
   x = 2,874.97