Finding the Fourth Proportional to 30,858.12, 42,601.15 and 19,385.00

Step by Step Solution

1. Step 1: Write the proportion equation
   30,858.12 : 42,601.15 = 19,385.00 : x
2. Step 2: Convert to fraction form
   30,858.12/42,601.15 = 19,385.00/x
3. Step 3: Cross multiply
   30,858.12x = 42,601.15 × 19,385.00
4. Step 4: Simplify right side
   30,858.12x = 825,823,079.74
5. Step 5: Solve for x
   x = 825,823,079.74/30,858.12
6. Step 6: Final answer
   x = 26,761.94