Finding the Fourth Proportional to 21,278,981.34, 29,365,027.02 and 12,111,624

Step by Step Solution

1. Step 1: Write the proportion equation
   21,278,981.34 : 29,365,027.02 = 12,111,624 : x
2. Step 2: Convert to fraction form
   21,278,981.34/29,365,027.02 = 12,111,624/x
3. Step 3: Cross multiply
   21,278,981.34x = 29,365,027.02 × 12,111,624
4. Step 4: Simplify right side
   21,278,981.34x = 355,658,166,016,080.50
5. Step 5: Solve for x
   x = 355,658,166,016,080.50/21,278,981.34
6. Step 6: Final answer
   x = 16,714,059.77