Finding the Fourth Proportional to 22,109.72, 33,157.70 and 7,315.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,109.72 : 33,157.70 = 7,315.32 : x
2. Step 2: Convert to fraction form
   22,109.72/33,157.70 = 7,315.32/x
3. Step 3: Cross multiply
   22,109.72x = 33,157.70 × 7,315.32
4. Step 4: Simplify right side
   22,109.72x = 242,559,185.96
5. Step 5: Solve for x
   x = 242,559,185.96/22,109.72
6. Step 6: Final answer
   x = 10,970.70