Finding the Fourth Proportional to 21,897,128.56, 30,215,906.04 and 12,106,232.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,897,128.56 : 30,215,906.04 = 12,106,232.32 : x
2. Step 2: Convert to fraction form
   21,897,128.56/30,215,906.04 = 12,106,232.32/x
3. Step 3: Cross multiply
   21,897,128.56x = 30,215,906.04 × 12,106,232.32
4. Step 4: Simplify right side
   21,897,128.56x = 365,800,778,279,531.19
5. Step 5: Solve for x
   x = 365,800,778,279,531.19/21,897,128.56
6. Step 6: Final answer
   x = 16,705,422.23