Finding the Fourth Proportional to 7,072.55, 10,598.77 and 5,209.01

Step by Step Solution

1. Step 1: Write the proportion equation
   7,072.55 : 10,598.77 = 5,209.01 : x
2. Step 2: Convert to fraction form
   7,072.55/10,598.77 = 5,209.01/x
3. Step 3: Cross multiply
   7,072.55x = 10,598.77 × 5,209.01
4. Step 4: Simplify right side
   7,072.55x = 55,209,062.88
5. Step 5: Solve for x
   x = 55,209,062.88/7,072.55
6. Step 6: Final answer
   x = 7,806.11