Finding the Fourth Proportional to 7,061.36, 10,591.34 and 4,287.29

Step by Step Solution

1. Step 1: Write the proportion equation
   7,061.36 : 10,591.34 = 4,287.29 : x
2. Step 2: Convert to fraction form
   7,061.36/10,591.34 = 4,287.29/x
3. Step 3: Cross multiply
   7,061.36x = 10,591.34 × 4,287.29
4. Step 4: Simplify right side
   7,061.36x = 45,408,071.68
5. Step 5: Solve for x
   x = 45,408,071.68/7,061.36
6. Step 6: Final answer
   x = 6,430.50