Finding the Fourth Proportional to 9,434.15, 13,019.28 and 5,400.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,434.15 : 13,019.28 = 5,400.96 : x
2. Step 2: Convert to fraction form
   9,434.15/13,019.28 = 5,400.96/x
3. Step 3: Cross multiply
   9,434.15x = 13,019.28 × 5,400.96
4. Step 4: Simplify right side
   9,434.15x = 70,316,637.45
5. Step 5: Solve for x
   x = 70,316,637.45/9,434.15
6. Step 6: Final answer
   x = 7,453.42