Finding the Fourth Proportional to 9,695.72, 13,380.27 and 5,389.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,695.72 : 13,380.27 = 5,389.21 : x
2. Step 2: Convert to fraction form
   9,695.72/13,380.27 = 5,389.21/x
3. Step 3: Cross multiply
   9,695.72x = 13,380.27 × 5,389.21
4. Step 4: Simplify right side
   9,695.72x = 72,109,117.52
5. Step 5: Solve for x
   x = 72,109,117.52/9,695.72
6. Step 6: Final answer
   x = 7,437.21