Finding the Fourth Proportional to 22,911.10, 34,290.06 and 13,047.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,911.10 : 34,290.06 = 13,047.72 : x
2. Step 2: Convert to fraction form
   22,911.10/34,290.06 = 13,047.72/x
3. Step 3: Cross multiply
   22,911.10x = 34,290.06 × 13,047.72
4. Step 4: Simplify right side
   22,911.10x = 447,407,101.66
5. Step 5: Solve for x
   x = 447,407,101.66/22,911.10
6. Step 6: Final answer
   x = 19,527.96