Finding the Fourth Proportional to 42,644.83, 63,944.61 and 13,054.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,644.83 : 63,944.61 = 13,054.72 : x
2. Step 2: Convert to fraction form
   42,644.83/63,944.61 = 13,054.72/x
3. Step 3: Cross multiply
   42,644.83x = 63,944.61 × 13,054.72
4. Step 4: Simplify right side
   42,644.83x = 834,779,000.29
5. Step 5: Solve for x
   x = 834,779,000.29/42,644.83
6. Step 6: Final answer
   x = 19,575.15