Finding the Fourth Proportional to 20,499.06, 28,303.86 and 12,552.12

Step by Step Solution

1. Step 1: Write the proportion equation
   20,499.06 : 28,303.86 = 12,552.12 : x
2. Step 2: Convert to fraction form
   20,499.06/28,303.86 = 12,552.12/x
3. Step 3: Cross multiply
   20,499.06x = 28,303.86 × 12,552.12
4. Step 4: Simplify right side
   20,499.06x = 355,273,447.18
5. Step 5: Solve for x
   x = 355,273,447.18/20,499.06
6. Step 6: Final answer
   x = 17,331.21