Finding the Fourth Proportional to 42,448.51, 63,672.52 and 10,858.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,448.51 : 63,672.52 = 10,858.52 : x
2. Step 2: Convert to fraction form
   42,448.51/63,672.52 = 10,858.52/x
3. Step 3: Cross multiply
   42,448.51x = 63,672.52 × 10,858.52
4. Step 4: Simplify right side
   42,448.51x = 691,389,331.87
5. Step 5: Solve for x
   x = 691,389,331.87/42,448.51
6. Step 6: Final answer
   x = 16,287.72