Finding the Fourth Proportional to 9,436.51, 13,021.35 and 5,457.02

Step by Step Solution

1. Step 1: Write the proportion equation
   9,436.51 : 13,021.35 = 5,457.02 : x
2. Step 2: Convert to fraction form
   9,436.51/13,021.35 = 5,457.02/x
3. Step 3: Cross multiply
   9,436.51x = 13,021.35 × 5,457.02
4. Step 4: Simplify right side
   9,436.51x = 71,057,767.38
5. Step 5: Solve for x
   x = 71,057,767.38/9,436.51
6. Step 6: Final answer
   x = 7,530.09