Finding the Fourth Proportional to 23,047.81, 31,803.54 and 12,976.08

Step by Step Solution

1. Step 1: Write the proportion equation
   23,047.81 : 31,803.54 = 12,976.08 : x
2. Step 2: Convert to fraction form
   23,047.81/31,803.54 = 12,976.08/x
3. Step 3: Cross multiply
   23,047.81x = 31,803.54 × 12,976.08
4. Step 4: Simplify right side
   23,047.81x = 412,685,279.32
5. Step 5: Solve for x
   x = 412,685,279.32/23,047.81
6. Step 6: Final answer
   x = 17,905.62