Finding the Fourth Proportional to 5,075.56, 7,003.98 and 2,980.36

Step by Step Solution

1. Step 1: Write the proportion equation
   5,075.56 : 7,003.98 = 2,980.36 : x
2. Step 2: Convert to fraction form
   5,075.56/7,003.98 = 2,980.36/x
3. Step 3: Cross multiply
   5,075.56x = 7,003.98 × 2,980.36
4. Step 4: Simplify right side
   5,075.56x = 20,874,381.83
5. Step 5: Solve for x
   x = 20,874,381.83/5,075.56
6. Step 6: Final answer
   x = 4,112.72