Finding the Fourth Proportional to 42,366.82, 63,555.54 and 12,784.62

Step by Step Solution

1. Step 1: Write the proportion equation
   42,366.82 : 63,555.54 = 12,784.62 : x
2. Step 2: Convert to fraction form
   42,366.82/63,555.54 = 12,784.62/x
3. Step 3: Cross multiply
   42,366.82x = 63,555.54 × 12,784.62
4. Step 4: Simplify right side
   42,366.82x = 812,533,427.79
5. Step 5: Solve for x
   x = 812,533,427.79/42,366.82
6. Step 6: Final answer
   x = 19,178.53