Finding the Fourth Proportional to 21,814,463.48, 30,103,714.30 and 11,891,128.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,814,463.48 : 30,103,714.30 = 11,891,128.72 : x
2. Step 2: Convert to fraction form
   21,814,463.48/30,103,714.30 = 11,891,128.72/x
3. Step 3: Cross multiply
   21,814,463.48x = 30,103,714.30 × 11,891,128.72
4. Step 4: Simplify right side
   21,814,463.48x = 357,967,141,691,404.75
5. Step 5: Solve for x
   x = 357,967,141,691,404.75/21,814,463.48
6. Step 6: Final answer
   x = 16,409,623.92