Finding the Fourth Proportional to 7,111.88, 9,812.28 and 4,591.69

Step by Step Solution

1. Step 1: Write the proportion equation
   7,111.88 : 9,812.28 = 4,591.69 : x
2. Step 2: Convert to fraction form
   7,111.88/9,812.28 = 4,591.69/x
3. Step 3: Cross multiply
   7,111.88x = 9,812.28 × 4,591.69
4. Step 4: Simplify right side
   7,111.88x = 45,054,970.01
5. Step 5: Solve for x
   x = 45,054,970.01/7,111.88
6. Step 6: Final answer
   x = 6,335.17