Finding the Fourth Proportional to 42,763.32, 64,150.92 and 13,183.47

Step by Step Solution

1. Step 1: Write the proportion equation
   42,763.32 : 64,150.92 = 13,183.47 : x
2. Step 2: Convert to fraction form
   42,763.32/64,150.92 = 13,183.47/x
3. Step 3: Cross multiply
   42,763.32x = 64,150.92 × 13,183.47
4. Step 4: Simplify right side
   42,763.32x = 845,731,729.29
5. Step 5: Solve for x
   x = 845,731,729.29/42,763.32
6. Step 6: Final answer
   x = 19,777.04