Finding the Fourth Proportional to 31,820.31, 43,934.00 and 19,889.01

Step by Step Solution

1. Step 1: Write the proportion equation
   31,820.31 : 43,934.00 = 19,889.01 : x
2. Step 2: Convert to fraction form
   31,820.31/43,934.00 = 19,889.01/x
3. Step 3: Cross multiply
   31,820.31x = 43,934.00 × 19,889.01
4. Step 4: Simplify right side
   31,820.31x = 873,803,665.89
5. Step 5: Solve for x
   x = 873,803,665.89/31,820.31
6. Step 6: Final answer
   x = 27,460.56