Finding the Fourth Proportional to 7,112.88, 10,669.59 and 1,918.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,112.88 : 10,669.59 = 1,918.89 : x
2. Step 2: Convert to fraction form
   7,112.88/10,669.59 = 1,918.89/x
3. Step 3: Cross multiply
   7,112.88x = 10,669.59 × 1,918.89
4. Step 4: Simplify right side
   7,112.88x = 20,473,769.56
5. Step 5: Solve for x
   x = 20,473,769.56/7,112.88
6. Step 6: Final answer
   x = 2,878.41