Finding the Fourth Proportional to 5,109.88, 7,051.39 and 2,985.52

Step by Step Solution

1. Step 1: Write the proportion equation
   5,109.88 : 7,051.39 = 2,985.52 : x
2. Step 2: Convert to fraction form
   5,109.88/7,051.39 = 2,985.52/x
3. Step 3: Cross multiply
   5,109.88x = 7,051.39 × 2,985.52
4. Step 4: Simplify right side
   5,109.88x = 21,052,015.69
5. Step 5: Solve for x
   x = 21,052,015.69/5,109.88
6. Step 6: Final answer
   x = 4,119.87