Finding the Fourth Proportional to 7,111.79, 10,673.13 and 3,218.93

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.79 : 10,673.13 = 3,218.93 : x
2. Step 2: Convert to fraction form
   7,111.79/10,673.13 = 3,218.93/x
3. Step 3: Cross multiply
   7,111.79x = 10,673.13 × 3,218.93
4. Step 4: Simplify right side
   7,111.79x = 34,356,058.35
5. Step 5: Solve for x
   x = 34,356,058.35/7,111.79
6. Step 6: Final answer
   x = 4,830.86