Finding the Fourth Proportional to 42,647.16, 63,982.32 and 13,064.34

Step by Step Solution

1. Step 1: Write the proportion equation
   42,647.16 : 63,982.32 = 13,064.34 : x
2. Step 2: Convert to fraction form
   42,647.16/63,982.32 = 13,064.34/x
3. Step 3: Cross multiply
   42,647.16x = 63,982.32 × 13,064.34
4. Step 4: Simplify right side
   42,647.16x = 835,886,782.47
5. Step 5: Solve for x
   x = 835,886,782.47/42,647.16
6. Step 6: Final answer
   x = 19,600.06