Finding the Fourth Proportional to 42,665.52, 63,977.19 and 13,076.22

Step by Step Solution

1. Step 1: Write the proportion equation
   42,665.52 : 63,977.19 = 13,076.22 : x
2. Step 2: Convert to fraction form
   42,665.52/63,977.19 = 13,076.22/x
3. Step 3: Cross multiply
   42,665.52x = 63,977.19 × 13,076.22
4. Step 4: Simplify right side
   42,665.52x = 836,579,811.42
5. Step 5: Solve for x
   x = 836,579,811.42/42,665.52
6. Step 6: Final answer
   x = 19,607.87