Finding the Fourth Proportional to 22,991.73, 34,495.79 and 13,139.29

Step by Step Solution

1. Step 1: Write the proportion equation
   22,991.73 : 34,495.79 = 13,139.29 : x
2. Step 2: Convert to fraction form
   22,991.73/34,495.79 = 13,139.29/x
3. Step 3: Cross multiply
   22,991.73x = 34,495.79 × 13,139.29
4. Step 4: Simplify right side
   22,991.73x = 453,250,188.59
5. Step 5: Solve for x
   x = 453,250,188.59/22,991.73
6. Step 6: Final answer
   x = 19,713.62