Finding the Fourth Proportional to 12,051.54, 18,061.92 and 10,485

Step by Step Solution

1. Step 1: Write the proportion equation
   12,051.54 : 18,061.92 = 10,485 : x
2. Step 2: Convert to fraction form
   12,051.54/18,061.92 = 10,485/x
3. Step 3: Cross multiply
   12,051.54x = 18,061.92 × 10,485
4. Step 4: Simplify right side
   12,051.54x = 189,379,231.20
5. Step 5: Solve for x
   x = 189,379,231.20/12,051.54
6. Step 6: Final answer
   x = 15,714.11