Finding the Fourth Proportional to 11,688.84, 17,535.06 and 3,897

Step by Step Solution

1. Step 1: Write the proportion equation
   11,688.84 : 17,535.06 = 3,897 : x
2. Step 2: Convert to fraction form
   11,688.84/17,535.06 = 3,897/x
3. Step 3: Cross multiply
   11,688.84x = 17,535.06 × 3,897
4. Step 4: Simplify right side
   11,688.84x = 68,334,128.82
5. Step 5: Solve for x
   x = 68,334,128.82/11,688.84
6. Step 6: Final answer
   x = 5,846.10