Finding the Fourth Proportional to 21,395,638.82, 32,108,781.41 and 9,108,216.89

Step by Step Solution

1. Step 1: Write the proportion equation
   21,395,638.82 : 32,108,781.41 = 9,108,216.89 : x
2. Step 2: Convert to fraction form
   21,395,638.82/32,108,781.41 = 9,108,216.89/x
3. Step 3: Cross multiply
   21,395,638.82x = 32,108,781.41 × 9,108,216.89
4. Step 4: Simplify right side
   21,395,638.82x = 292,453,744,949,795
5. Step 5: Solve for x
   x = 292,453,744,949,795/21,395,638.82
6. Step 6: Final answer
   x = 13,668,848.47