Finding the Fourth Proportional to 23,106.72, 31,889.16 and 13,034.64

Step by Step Solution

1. Step 1: Write the proportion equation
   23,106.72 : 31,889.16 = 13,034.64 : x
2. Step 2: Convert to fraction form
   23,106.72/31,889.16 = 13,034.64/x
3. Step 3: Cross multiply
   23,106.72x = 31,889.16 × 13,034.64
4. Step 4: Simplify right side
   23,106.72x = 415,663,720.50
5. Step 5: Solve for x
   x = 415,663,720.50/23,106.72
6. Step 6: Final answer
   x = 17,988.87