Finding the Fourth Proportional to 12,945.83, 19,416.65 and 4,624.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,945.83 : 19,416.65 = 4,624.43 : x
2. Step 2: Convert to fraction form
   12,945.83/19,416.65 = 4,624.43/x
3. Step 3: Cross multiply
   12,945.83x = 19,416.65 × 4,624.43
4. Step 4: Simplify right side
   12,945.83x = 89,790,818.55
5. Step 5: Solve for x
   x = 89,790,818.55/12,945.83
6. Step 6: Final answer
   x = 6,935.89