Finding the Fourth Proportional to 19,322.50, 26,665.05 and 10,939

Step by Step Solution

1. Step 1: Write the proportion equation
   19,322.50 : 26,665.05 = 10,939 : x
2. Step 2: Convert to fraction form
   19,322.50/26,665.05 = 10,939/x
3. Step 3: Cross multiply
   19,322.50x = 26,665.05 × 10,939
4. Step 4: Simplify right side
   19,322.50x = 291,688,981.95
5. Step 5: Solve for x
   x = 291,688,981.95/19,322.50
6. Step 6: Final answer
   x = 15,095.82