Finding the Fourth Proportional to 13,312.82, 19,955.72 and 8,635.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,312.82 : 19,955.72 = 8,635.82 : x
2. Step 2: Convert to fraction form
   13,312.82/19,955.72 = 8,635.82/x
3. Step 3: Cross multiply
   13,312.82x = 19,955.72 × 8,635.82
4. Step 4: Simplify right side
   13,312.82x = 172,333,879.12
5. Step 5: Solve for x
   x = 172,333,879.12/13,312.82
6. Step 6: Final answer
   x = 12,944.95