Finding the Fourth Proportional to 9,131.96, 13,689.54 and 3,864.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.96 : 13,689.54 = 3,864.10 : x
2. Step 2: Convert to fraction form
   9,131.96/13,689.54 = 3,864.10/x
3. Step 3: Cross multiply
   9,131.96x = 13,689.54 × 3,864.10
4. Step 4: Simplify right side
   9,131.96x = 52,897,683.07
5. Step 5: Solve for x
   x = 52,897,683.07/9,131.96
6. Step 6: Final answer
   x = 5,792.59