Finding the Fourth Proportional to 42,128.09, 63,191.96 and 10,963.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,128.09 : 63,191.96 = 10,963.25 : x
2. Step 2: Convert to fraction form
   42,128.09/63,191.96 = 10,963.25/x
3. Step 3: Cross multiply
   42,128.09x = 63,191.96 × 10,963.25
4. Step 4: Simplify right side
   42,128.09x = 692,789,200.65
5. Step 5: Solve for x
   x = 692,789,200.65/42,128.09
6. Step 6: Final answer
   x = 16,444.83