Finding the Fourth Proportional to 9,181.12, 13,767.13 and 3,915.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,181.12 : 13,767.13 = 3,915.31 : x
2. Step 2: Convert to fraction form
   9,181.12/13,767.13 = 3,915.31/x
3. Step 3: Cross multiply
   9,181.12x = 13,767.13 × 3,915.31
4. Step 4: Simplify right side
   9,181.12x = 53,902,581.76
5. Step 5: Solve for x
   x = 53,902,581.76/9,181.12
6. Step 6: Final answer
   x = 5,871.02