Finding the Fourth Proportional to 22,172,005.36, 30,375,138.18 and 21,343,040.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,172,005.36 : 30,375,138.18 = 21,343,040.42 : x
2. Step 2: Convert to fraction form
   22,172,005.36/30,375,138.18 = 21,343,040.42/x
3. Step 3: Cross multiply
   22,172,005.36x = 30,375,138.18 × 21,343,040.42
4. Step 4: Simplify right side
   22,172,005.36x = 648,297,801,938,825.25
5. Step 5: Solve for x
   x = 648,297,801,938,825.25/22,172,005.36
6. Step 6: Final answer
   x = 29,239,475.25