Finding the Fourth Proportional to 23,109.48, 31,890.93 and 12,499.08

Step by Step Solution

1. Step 1: Write the proportion equation
   23,109.48 : 31,890.93 = 12,499.08 : x
2. Step 2: Convert to fraction form
   23,109.48/31,890.93 = 12,499.08/x
3. Step 3: Cross multiply
   23,109.48x = 31,890.93 × 12,499.08
4. Step 4: Simplify right side
   23,109.48x = 398,607,285.34
5. Step 5: Solve for x
   x = 398,607,285.34/23,109.48
6. Step 6: Final answer
   x = 17,248.65