Finding the Fourth Proportional to 9,606.21, 13,255.97 and 5,357.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,606.21 : 13,255.97 = 5,357.90 : x
2. Step 2: Convert to fraction form
   9,606.21/13,255.97 = 5,357.90/x
3. Step 3: Cross multiply
   9,606.21x = 13,255.97 × 5,357.90
4. Step 4: Simplify right side
   9,606.21x = 71,024,068.59
5. Step 5: Solve for x
   x = 71,024,068.59/9,606.21
6. Step 6: Final answer
   x = 7,393.56