Finding the Fourth Proportional to 9,430.25, 13,015.33 and 5,453.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,430.25 : 13,015.33 = 5,453.78 : x
2. Step 2: Convert to fraction form
   9,430.25/13,015.33 = 5,453.78/x
3. Step 3: Cross multiply
   9,430.25x = 13,015.33 × 5,453.78
4. Step 4: Simplify right side
   9,430.25x = 70,982,667.74
5. Step 5: Solve for x
   x = 70,982,667.74/9,430.25
6. Step 6: Final answer
   x = 7,527.13