Finding the Fourth Proportional to 19,065.09, 28,601.83 and 7,820.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,065.09 : 28,601.83 = 7,820.50 : x
2. Step 2: Convert to fraction form
   19,065.09/28,601.83 = 7,820.50/x
3. Step 3: Cross multiply
   19,065.09x = 28,601.83 × 7,820.50
4. Step 4: Simplify right side
   19,065.09x = 223,680,581.42
5. Step 5: Solve for x
   x = 223,680,581.42/19,065.09
6. Step 6: Final answer
   x = 11,732.47