Finding the Fourth Proportional to 7,111.53, 9,814.78 and 4,280.37

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.53 : 9,814.78 = 4,280.37 : x
2. Step 2: Convert to fraction form
   7,111.53/9,814.78 = 4,280.37/x
3. Step 3: Cross multiply
   7,111.53x = 9,814.78 × 4,280.37
4. Step 4: Simplify right side
   7,111.53x = 42,010,868.47
5. Step 5: Solve for x
   x = 42,010,868.47/7,111.53
6. Step 6: Final answer
   x = 5,907.43