Finding the Fourth Proportional to 9,887.36, 13,644.32 and 5,411.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,887.36 : 13,644.32 = 5,411.10 : x
2. Step 2: Convert to fraction form
   9,887.36/13,644.32 = 5,411.10/x
3. Step 3: Cross multiply
   9,887.36x = 13,644.32 × 5,411.10
4. Step 4: Simplify right side
   9,887.36x = 73,830,752.90
5. Step 5: Solve for x
   x = 73,830,752.90/9,887.36
6. Step 6: Final answer
   x = 7,467.19