Finding the Fourth Proportional to 7,817.48, 10,788.15 and 4,280.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,817.48 : 10,788.15 = 4,280.72 : x
2. Step 2: Convert to fraction form
   7,817.48/10,788.15 = 4,280.72/x
3. Step 3: Cross multiply
   7,817.48x = 10,788.15 × 4,280.72
4. Step 4: Simplify right side
   7,817.48x = 46,181,011.58
5. Step 5: Solve for x
   x = 46,181,011.58/7,817.48
6. Step 6: Final answer
   x = 5,907.40