Finding the Fourth Proportional to 21,444.42, 29,588.52 and 12,947.94

Step by Step Solution

1. Step 1: Write the proportion equation
   21,444.42 : 29,588.52 = 12,947.94 : x
2. Step 2: Convert to fraction form
   21,444.42/29,588.52 = 12,947.94/x
3. Step 3: Cross multiply
   21,444.42x = 29,588.52 × 12,947.94
4. Step 4: Simplify right side
   21,444.42x = 383,110,381.65
5. Step 5: Solve for x
   x = 383,110,381.65/21,444.42
6. Step 6: Final answer
   x = 17,865.27