Finding the Fourth Proportional to 21,457,152.72, 29,611,024.83 and 11,667,526.74

Step by Step Solution

1. Step 1: Write the proportion equation
   21,457,152.72 : 29,611,024.83 = 11,667,526.74 : x
2. Step 2: Convert to fraction form
   21,457,152.72/29,611,024.83 = 11,667,526.74/x
3. Step 3: Cross multiply
   21,457,152.72x = 29,611,024.83 × 11,667,526.74
4. Step 4: Simplify right side
   21,457,152.72x = 345,487,424,002,828.94
5. Step 5: Solve for x
   x = 345,487,424,002,828.94/21,457,152.72
6. Step 6: Final answer
   x = 16,101,270.68