Finding the Fourth Proportional to 9,111.42, 13,664.70 and 3,916.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.42 : 13,664.70 = 3,916.08 : x
2. Step 2: Convert to fraction form
   9,111.42/13,664.70 = 3,916.08/x
3. Step 3: Cross multiply
   9,111.42x = 13,664.70 × 3,916.08
4. Step 4: Simplify right side
   9,111.42x = 53,512,058.38
5. Step 5: Solve for x
   x = 53,512,058.38/9,111.42
6. Step 6: Final answer
   x = 5,873.08