Finding the Fourth Proportional to 9,860.66, 13,607.18 and 5,383.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,860.66 : 13,607.18 = 5,383.54 : x
2. Step 2: Convert to fraction form
   9,860.66/13,607.18 = 5,383.54/x
3. Step 3: Cross multiply
   9,860.66x = 13,607.18 × 5,383.54
4. Step 4: Simplify right side
   9,860.66x = 73,254,797.82
5. Step 5: Solve for x
   x = 73,254,797.82/9,860.66
6. Step 6: Final answer
   x = 7,429.00