Finding the Fourth Proportional to 12,835.62, 17,705.52 and 8,111.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,835.62 : 17,705.52 = 8,111.70 : x
2. Step 2: Convert to fraction form
   12,835.62/17,705.52 = 8,111.70/x
3. Step 3: Cross multiply
   12,835.62x = 17,705.52 × 8,111.70
4. Step 4: Simplify right side
   12,835.62x = 143,621,866.58
5. Step 5: Solve for x
   x = 143,621,866.58/12,835.62
6. Step 6: Final answer
   x = 11,189.32