Finding the Fourth Proportional to 21,474,359.52, 29,623,323.12 and 12,766,338.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,474,359.52 : 29,623,323.12 = 12,766,338.72 : x
2. Step 2: Convert to fraction form
   21,474,359.52/29,623,323.12 = 12,766,338.72/x
3. Step 3: Cross multiply
   21,474,359.52x = 29,623,323.12 × 12,766,338.72
4. Step 4: Simplify right side
   21,474,359.52x = 378,181,376,961,927.25
5. Step 5: Solve for x
   x = 378,181,376,961,927.25/21,474,359.52
6. Step 6: Final answer
   x = 17,610,833.82