Finding the Fourth Proportional to 21,689,196.14, 29,931,396.06 and 11,899,462.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,689,196.14 : 29,931,396.06 = 11,899,462.42 : x
2. Step 2: Convert to fraction form
   21,689,196.14/29,931,396.06 = 11,899,462.42/x
3. Step 3: Cross multiply
   21,689,196.14x = 29,931,396.06 × 11,899,462.42
4. Step 4: Simplify right side
   21,689,196.14x = 356,167,522,594,106.06
5. Step 5: Solve for x
   x = 356,167,522,594,106.06/21,689,196.14
6. Step 6: Final answer
   x = 16,421,425.69