Finding the Fourth Proportional to 12,973.08, 19,455.57 and 8,530.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,973.08 : 19,455.57 = 8,530.50 : x
2. Step 2: Convert to fraction form
   12,973.08/19,455.57 = 8,530.50/x
3. Step 3: Cross multiply
   12,973.08x = 19,455.57 × 8,530.50
4. Step 4: Simplify right side
   12,973.08x = 165,965,739.89
5. Step 5: Solve for x
   x = 165,965,739.89/12,973.08
6. Step 6: Final answer
   x = 12,793.09