Finding the Fourth Proportional to 9,933.72, 13,707.82 and 5,457.76

Step by Step Solution

1. Step 1: Write the proportion equation
   9,933.72 : 13,707.82 = 5,457.76 : x
2. Step 2: Convert to fraction form
   9,933.72/13,707.82 = 5,457.76/x
3. Step 3: Cross multiply
   9,933.72x = 13,707.82 × 5,457.76
4. Step 4: Simplify right side
   9,933.72x = 74,813,991.68
5. Step 5: Solve for x
   x = 74,813,991.68/9,933.72
6. Step 6: Final answer
   x = 7,531.32