Finding the Fourth Proportional to 22,809.60, 34,191.72 and 7,215.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,809.60 : 34,191.72 = 7,215.48 : x
2. Step 2: Convert to fraction form
   22,809.60/34,191.72 = 7,215.48/x
3. Step 3: Cross multiply
   22,809.60x = 34,191.72 × 7,215.48
4. Step 4: Simplify right side
   22,809.60x = 246,709,671.83
5. Step 5: Solve for x
   x = 246,709,671.83/22,809.60
6. Step 6: Final answer
   x = 10,816.05