Finding the Fourth Proportional to 15,921.76, 21,971.59 and 8,848.00

Step by Step Solution

1. Step 1: Write the proportion equation
   15,921.76 : 21,971.59 = 8,848.00 : x
2. Step 2: Convert to fraction form
   15,921.76/21,971.59 = 8,848.00/x
3. Step 3: Cross multiply
   15,921.76x = 21,971.59 × 8,848.00
4. Step 4: Simplify right side
   15,921.76x = 194,404,474.22
5. Step 5: Solve for x
   x = 194,404,474.22/15,921.76
6. Step 6: Final answer
   x = 12,209.99