Finding the Fourth Proportional to 9,430.44, 13,012.56 and 5,450.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,430.44 : 13,012.56 = 5,450.78 : x
2. Step 2: Convert to fraction form
   9,430.44/13,012.56 = 5,450.78/x
3. Step 3: Cross multiply
   9,430.44x = 13,012.56 × 5,450.78
4. Step 4: Simplify right side
   9,430.44x = 70,928,601.80
5. Step 5: Solve for x
   x = 70,928,601.80/9,430.44
6. Step 6: Final answer
   x = 7,521.24