Finding the Fourth Proportional to 42,364.92, 63,547.83 and 12,783

Step by Step Solution

1. Step 1: Write the proportion equation
   42,364.92 : 63,547.83 = 12,783 : x
2. Step 2: Convert to fraction form
   42,364.92/63,547.83 = 12,783/x
3. Step 3: Cross multiply
   42,364.92x = 63,547.83 × 12,783
4. Step 4: Simplify right side
   42,364.92x = 812,331,910.89
5. Step 5: Solve for x
   x = 812,331,910.89/42,364.92
6. Step 6: Final answer
   x = 19,174.64