Finding the Fourth Proportional to 10,938.33, 15,089.34 and 7,167.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,938.33 : 15,089.34 = 7,167.81 : x
2. Step 2: Convert to fraction form
   10,938.33/15,089.34 = 7,167.81/x
3. Step 3: Cross multiply
   10,938.33x = 15,089.34 × 7,167.81
4. Step 4: Simplify right side
   10,938.33x = 108,157,522.15
5. Step 5: Solve for x
   x = 108,157,522.15/10,938.33
6. Step 6: Final answer
   x = 9,887.94