Finding the Fourth Proportional to 23,011.42, 34,461.77 and 13,120.71

Step by Step Solution

1. Step 1: Write the proportion equation
   23,011.42 : 34,461.77 = 13,120.71 : x
2. Step 2: Convert to fraction form
   23,011.42/34,461.77 = 13,120.71/x
3. Step 3: Cross multiply
   23,011.42x = 34,461.77 × 13,120.71
4. Step 4: Simplify right side
   23,011.42x = 452,162,804.65
5. Step 5: Solve for x
   x = 452,162,804.65/23,011.42
6. Step 6: Final answer
   x = 19,649.50