Finding the Fourth Proportional to 13,080.27, 18,050.81 and 7,111.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,080.27 : 18,050.81 = 7,111.94 : x
2. Step 2: Convert to fraction form
   13,080.27/18,050.81 = 7,111.94/x
3. Step 3: Cross multiply
   13,080.27x = 18,050.81 × 7,111.94
4. Step 4: Simplify right side
   13,080.27x = 128,376,277.67
5. Step 5: Solve for x
   x = 128,376,277.67/13,080.27
6. Step 6: Final answer
   x = 9,814.50