Finding the Fourth Proportional to 21,069,504.27, 29,078,276.72 and 11,902,737.87

Step by Step Solution

1. Step 1: Write the proportion equation
   21,069,504.27 : 29,078,276.72 = 11,902,737.87 : x
2. Step 2: Convert to fraction form
   21,069,504.27/29,078,276.72 = 11,902,737.87/x
3. Step 3: Cross multiply
   21,069,504.27x = 29,078,276.72 × 11,902,737.87
4. Step 4: Simplify right side
   21,069,504.27x = 346,111,105,449,969.69
5. Step 5: Solve for x
   x = 346,111,105,449,969.69/21,069,504.27
6. Step 6: Final answer
   x = 16,427,111.95