Finding the Fourth Proportional to 13,095.63, 19,676.25 and 12,308.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,095.63 : 19,676.25 = 12,308.31 : x
2. Step 2: Convert to fraction form
   13,095.63/19,676.25 = 12,308.31/x
3. Step 3: Cross multiply
   13,095.63x = 19,676.25 × 12,308.31
4. Step 4: Simplify right side
   13,095.63x = 242,181,384.64
5. Step 5: Solve for x
   x = 242,181,384.64/13,095.63
6. Step 6: Final answer
   x = 18,493.30