Finding the Fourth Proportional to 7,112.34, 10,667.30 and 1,917

Step by Step Solution

1. Step 1: Write the proportion equation
   7,112.34 : 10,667.30 = 1,917 : x
2. Step 2: Convert to fraction form
   7,112.34/10,667.30 = 1,917/x
3. Step 3: Cross multiply
   7,112.34x = 10,667.30 × 1,917
4. Step 4: Simplify right side
   7,112.34x = 20,449,204.52
5. Step 5: Solve for x
   x = 20,449,204.52/7,112.34
6. Step 6: Final answer
   x = 2,875.17