Finding the Fourth Proportional to 31,015.34, 42,782.94 and 19,511.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,015.34 : 42,782.94 = 19,511.96 : x
2. Step 2: Convert to fraction form
   31,015.34/42,782.94 = 19,511.96/x
3. Step 3: Cross multiply
   31,015.34x = 42,782.94 × 19,511.96
4. Step 4: Simplify right side
   31,015.34x = 834,779,013.96
5. Step 5: Solve for x
   x = 834,779,013.96/31,015.34
6. Step 6: Final answer
   x = 26,915.04