Finding the Fourth Proportional to 10,897.81, 16,309.38 and 7,569.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,897.81 : 16,309.38 = 7,569.81 : x
2. Step 2: Convert to fraction form
   10,897.81/16,309.38 = 7,569.81/x
3. Step 3: Cross multiply
   10,897.81x = 16,309.38 × 7,569.81
4. Step 4: Simplify right side
   10,897.81x = 123,458,913.27
5. Step 5: Solve for x
   x = 123,458,913.27/10,897.81
6. Step 6: Final answer
   x = 11,328.78