Finding the Fourth Proportional to 21,365.46, 29,482.35 and 12,412.83

Step by Step Solution

1. Step 1: Write the proportion equation
   21,365.46 : 29,482.35 = 12,412.83 : x
2. Step 2: Convert to fraction form
   21,365.46/29,482.35 = 12,412.83/x
3. Step 3: Cross multiply
   21,365.46x = 29,482.35 × 12,412.83
4. Step 4: Simplify right side
   21,365.46x = 365,959,462.56
5. Step 5: Solve for x
   x = 365,959,462.56/21,365.46
6. Step 6: Final answer
   x = 17,128.56