Finding the Fourth Proportional to 42,877.30, 64,322.18 and 13,297.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,877.30 : 64,322.18 = 13,297.52 : x
2. Step 2: Convert to fraction form
   42,877.30/64,322.18 = 13,297.52/x
3. Step 3: Cross multiply
   42,877.30x = 64,322.18 × 13,297.52
4. Step 4: Simplify right side
   42,877.30x = 855,325,474.99
5. Step 5: Solve for x
   x = 855,325,474.99/42,877.30
6. Step 6: Final answer
   x = 19,948.21