Finding the Fourth Proportional to 7,110.59, 9,810.20 and 4,315.55

Step by Step Solution

1. Step 1: Write the proportion equation
   7,110.59 : 9,810.20 = 4,315.55 : x
2. Step 2: Convert to fraction form
   7,110.59/9,810.20 = 4,315.55/x
3. Step 3: Cross multiply
   7,110.59x = 9,810.20 × 4,315.55
4. Step 4: Simplify right side
   7,110.59x = 42,336,387.03
5. Step 5: Solve for x
   x = 42,336,387.03/7,110.59
6. Step 6: Final answer
   x = 5,953.99