Finding the Fourth Proportional to 22,106.72, 33,153.20 and 7,312.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,106.72 : 33,153.20 = 7,312.32 : x
2. Step 2: Convert to fraction form
   22,106.72/33,153.20 = 7,312.32/x
3. Step 3: Cross multiply
   22,106.72x = 33,153.20 × 7,312.32
4. Step 4: Simplify right side
   22,106.72x = 242,426,807.42
5. Step 5: Solve for x
   x = 242,426,807.42/22,106.72
6. Step 6: Final answer
   x = 10,966.20