Finding the Fourth Proportional to 13,075.18, 18,041.40 and 7,771.30

Step by Step Solution

1. Step 1: Write the proportion equation
   13,075.18 : 18,041.40 = 7,771.30 : x
2. Step 2: Convert to fraction form
   13,075.18/18,041.40 = 7,771.30/x
3. Step 3: Cross multiply
   13,075.18x = 18,041.40 × 7,771.30
4. Step 4: Simplify right side
   13,075.18x = 140,205,131.82
5. Step 5: Solve for x
   x = 140,205,131.82/13,075.18
6. Step 6: Final answer
   x = 10,723.00