Finding the Fourth Proportional to 42,518.93, 63,767.00 and 12,928.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,518.93 : 63,767.00 = 12,928.82 : x
2. Step 2: Convert to fraction form
   42,518.93/63,767.00 = 12,928.82/x
3. Step 3: Cross multiply
   42,518.93x = 63,767.00 × 12,928.82
4. Step 4: Simplify right side
   42,518.93x = 824,431,705.70
5. Step 5: Solve for x
   x = 824,431,705.70/42,518.93
6. Step 6: Final answer
   x = 19,389.76