Finding the Fourth Proportional to 12,493.72, 17,259.06 and 9,992.44

Step by Step Solution

1. Step 1: Write the proportion equation
   12,493.72 : 17,259.06 = 9,992.44 : x
2. Step 2: Convert to fraction form
   12,493.72/17,259.06 = 9,992.44/x
3. Step 3: Cross multiply
   12,493.72x = 17,259.06 × 9,992.44
4. Step 4: Simplify right side
   12,493.72x = 172,460,121.51
5. Step 5: Solve for x
   x = 172,460,121.51/12,493.72
6. Step 6: Final answer
   x = 13,803.74