Finding the Fourth Proportional to 21,671,554.05, 29,905,601.58 and 12,377,296.89

Step by Step Solution

1. Step 1: Write the proportion equation
   21,671,554.05 : 29,905,601.58 = 12,377,296.89 : x
2. Step 2: Convert to fraction form
   21,671,554.05/29,905,601.58 = 12,377,296.89/x
3. Step 3: Cross multiply
   21,671,554.05x = 29,905,601.58 × 12,377,296.89
4. Step 4: Simplify right side
   21,671,554.05x = 370,150,509,429,713.06
5. Step 5: Solve for x
   x = 370,150,509,429,713.06/21,671,554.05
6. Step 6: Final answer
   x = 17,080,016.90