Finding the Fourth Proportional to 15,280.72, 22,886.84 and 13,280.72

Step by Step Solution

1. Step 1: Write the proportion equation
   15,280.72 : 22,886.84 = 13,280.72 : x
2. Step 2: Convert to fraction form
   15,280.72/22,886.84 = 13,280.72/x
3. Step 3: Cross multiply
   15,280.72x = 22,886.84 × 13,280.72
4. Step 4: Simplify right side
   15,280.72x = 303,953,713.72
5. Step 5: Solve for x
   x = 303,953,713.72/15,280.72
6. Step 6: Final answer
   x = 19,891.32