Finding the Fourth Proportional to 9,859.86, 13,606.56 and 5,383.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,859.86 : 13,606.56 = 5,383.53 : x
2. Step 2: Convert to fraction form
   9,859.86/13,606.56 = 5,383.53/x
3. Step 3: Cross multiply
   9,859.86x = 13,606.56 × 5,383.53
4. Step 4: Simplify right side
   9,859.86x = 73,251,323.96
5. Step 5: Solve for x
   x = 73,251,323.96/9,859.86
6. Step 6: Final answer
   x = 7,429.25