Finding the Fourth Proportional to 9,837.72, 13,576.32 and 5,361.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,837.72 : 13,576.32 = 5,361.21 : x
2. Step 2: Convert to fraction form
   9,837.72/13,576.32 = 5,361.21/x
3. Step 3: Cross multiply
   9,837.72x = 13,576.32 × 5,361.21
4. Step 4: Simplify right side
   9,837.72x = 72,785,502.55
5. Step 5: Solve for x
   x = 72,785,502.55/9,837.72
6. Step 6: Final answer
   x = 7,398.61