Finding the Fourth Proportional to 15,061.14, 20,784.06 and 8,346.72

Step by Step Solution

1. Step 1: Write the proportion equation
   15,061.14 : 20,784.06 = 8,346.72 : x
2. Step 2: Convert to fraction form
   15,061.14/20,784.06 = 8,346.72/x
3. Step 3: Cross multiply
   15,061.14x = 20,784.06 × 8,346.72
4. Step 4: Simplify right side
   15,061.14x = 173,478,729.28
5. Step 5: Solve for x
   x = 173,478,729.28/15,061.14
6. Step 6: Final answer
   x = 11,518.30