Finding the Fourth Proportional to 22,921, 31,623.87 and 12,848.04

Step by Step Solution

1. Step 1: Write the proportion equation
   22,921 : 31,623.87 = 12,848.04 : x
2. Step 2: Convert to fraction form
   22,921/31,623.87 = 12,848.04/x
3. Step 3: Cross multiply
   22,921x = 31,623.87 × 12,848.04
4. Step 4: Simplify right side
   22,921x = 406,304,746.71
5. Step 5: Solve for x
   x = 406,304,746.71/22,921
6. Step 6: Final answer
   x = 17,726.31