Finding the Fourth Proportional to 15,978.84, 22,050.51 and 9,265.10

Step by Step Solution

1. Step 1: Write the proportion equation
   15,978.84 : 22,050.51 = 9,265.10 : x
2. Step 2: Convert to fraction form
   15,978.84/22,050.51 = 9,265.10/x
3. Step 3: Cross multiply
   15,978.84x = 22,050.51 × 9,265.10
4. Step 4: Simplify right side
   15,978.84x = 204,300,069.95
5. Step 5: Solve for x
   x = 204,300,069.95/15,978.84
6. Step 6: Final answer
   x = 12,785.66