Finding the Fourth Proportional to 9,933.46, 13,706.69 and 5,457.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,933.46 : 13,706.69 = 5,457.40 : x
2. Step 2: Convert to fraction form
   9,933.46/13,706.69 = 5,457.40/x
3. Step 3: Cross multiply
   9,933.46x = 13,706.69 × 5,457.40
4. Step 4: Simplify right side
   9,933.46x = 74,802,903.65
5. Step 5: Solve for x
   x = 74,802,903.65/9,933.46
6. Step 6: Final answer
   x = 7,530.40