Finding the Fourth Proportional to 21,381.76, 32,075.37 and 8,237.89

Step by Step Solution

1. Step 1: Write the proportion equation
   21,381.76 : 32,075.37 = 8,237.89 : x
2. Step 2: Convert to fraction form
   21,381.76/32,075.37 = 8,237.89/x
3. Step 3: Cross multiply
   21,381.76x = 32,075.37 × 8,237.89
4. Step 4: Simplify right side
   21,381.76x = 264,233,369.77
5. Step 5: Solve for x
   x = 264,233,369.77/21,381.76
6. Step 6: Final answer
   x = 12,357.89