Finding the Fourth Proportional to 10,816.47, 16,196.67 and 9,266.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,816.47 : 16,196.67 = 9,266.40 : x
2. Step 2: Convert to fraction form
   10,816.47/16,196.67 = 9,266.40/x
3. Step 3: Cross multiply
   10,816.47x = 16,196.67 × 9,266.40
4. Step 4: Simplify right side
   10,816.47x = 150,084,822.89
5. Step 5: Solve for x
   x = 150,084,822.89/10,816.47
6. Step 6: Final answer
   x = 13,875.58