Finding the Fourth Proportional to 9,729.21, 13,426.34 and 5,695.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,729.21 : 13,426.34 = 5,695.31 : x
2. Step 2: Convert to fraction form
   9,729.21/13,426.34 = 5,695.31/x
3. Step 3: Cross multiply
   9,729.21x = 13,426.34 × 5,695.31
4. Step 4: Simplify right side
   9,729.21x = 76,467,072.86
5. Step 5: Solve for x
   x = 76,467,072.86/9,729.21
6. Step 6: Final answer
   x = 7,859.54