Finding the Fourth Proportional to 9,859.32, 13,605.72 and 5,383.26

Step by Step Solution

1. Step 1: Write the proportion equation
   9,859.32 : 13,605.72 = 5,383.26 : x
2. Step 2: Convert to fraction form
   9,859.32/13,605.72 = 5,383.26/x
3. Step 3: Cross multiply
   9,859.32x = 13,605.72 × 5,383.26
4. Step 4: Simplify right side
   9,859.32x = 73,243,138.34
5. Step 5: Solve for x
   x = 73,243,138.34/9,859.32
6. Step 6: Final answer
   x = 7,428.82