Finding the Fourth Proportional to 13,075.52, 18,045.74 and 7,770.33

Step by Step Solution

1. Step 1: Write the proportion equation
   13,075.52 : 18,045.74 = 7,770.33 : x
2. Step 2: Convert to fraction form
   13,075.52/18,045.74 = 7,770.33/x
3. Step 3: Cross multiply
   13,075.52x = 18,045.74 × 7,770.33
4. Step 4: Simplify right side
   13,075.52x = 140,221,374.32
5. Step 5: Solve for x
   x = 140,221,374.32/13,075.52
6. Step 6: Final answer
   x = 10,723.97