Finding the Fourth Proportional to 23,985.34, 33,070.34 and 19,721.50

Step by Step Solution

1. Step 1: Write the proportion equation
   23,985.34 : 33,070.34 = 19,721.50 : x
2. Step 2: Convert to fraction form
   23,985.34/33,070.34 = 19,721.50/x
3. Step 3: Cross multiply
   23,985.34x = 33,070.34 × 19,721.50
4. Step 4: Simplify right side
   23,985.34x = 652,196,710.31
5. Step 5: Solve for x
   x = 652,196,710.31/23,985.34
6. Step 6: Final answer
   x = 27,191.47