Finding the Fourth Proportional to 12,845.79, 19,263.83 and 5,453.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,845.79 : 19,263.83 = 5,453.73 : x
2. Step 2: Convert to fraction form
   12,845.79/19,263.83 = 5,453.73/x
3. Step 3: Cross multiply
   12,845.79x = 19,263.83 × 5,453.73
4. Step 4: Simplify right side
   12,845.79x = 105,059,700.32
5. Step 5: Solve for x
   x = 105,059,700.32/12,845.79
6. Step 6: Final answer
   x = 8,178.53