Finding the Fourth Proportional to 19,123.18, 26,389.83 and 10,739.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,123.18 : 26,389.83 = 10,739.50 : x
2. Step 2: Convert to fraction form
   19,123.18/26,389.83 = 10,739.50/x
3. Step 3: Cross multiply
   19,123.18x = 26,389.83 × 10,739.50
4. Step 4: Simplify right side
   19,123.18x = 283,413,579.29
5. Step 5: Solve for x
   x = 283,413,579.29/19,123.18
6. Step 6: Final answer
   x = 14,820.42