Finding the Fourth Proportional to 5,810.79, 8,019.55 and 5,454.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,810.79 : 8,019.55 = 5,454.50 : x
2. Step 2: Convert to fraction form
   5,810.79/8,019.55 = 5,454.50/x
3. Step 3: Cross multiply
   5,810.79x = 8,019.55 × 5,454.50
4. Step 4: Simplify right side
   5,810.79x = 43,742,571.51
5. Step 5: Solve for x
   x = 43,742,571.51/5,810.79
6. Step 6: Final answer
   x = 7,527.81