Finding the Fourth Proportional to 31,146.33, 42,986.86 and 19,804.00

Step by Step Solution

1. Step 1: Write the proportion equation
   31,146.33 : 42,986.86 = 19,804.00 : x
2. Step 2: Convert to fraction form
   31,146.33/42,986.86 = 19,804.00/x
3. Step 3: Cross multiply
   31,146.33x = 42,986.86 × 19,804.00
4. Step 4: Simplify right side
   31,146.33x = 851,311,779.66
5. Step 5: Solve for x
   x = 851,311,779.66/31,146.33
6. Step 6: Final answer
   x = 27,332.65