Finding the Fourth Proportional to 13,079.87, 18,050.39 and 7,111.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,079.87 : 18,050.39 = 7,111.52 : x
2. Step 2: Convert to fraction form
   13,079.87/18,050.39 = 7,111.52/x
3. Step 3: Cross multiply
   13,079.87x = 18,050.39 × 7,111.52
4. Step 4: Simplify right side
   13,079.87x = 128,365,709.49
5. Step 5: Solve for x
   x = 128,365,709.49/13,079.87
6. Step 6: Final answer
   x = 9,813.99