Finding the Fourth Proportional to 21,327, 29,430.63 and 12,373.89

Step by Step Solution

1. Step 1: Write the proportion equation
   21,327 : 29,430.63 = 12,373.89 : x
2. Step 2: Convert to fraction form
   21,327/29,430.63 = 12,373.89/x
3. Step 3: Cross multiply
   21,327x = 29,430.63 × 12,373.89
4. Step 4: Simplify right side
   21,327x = 364,171,378.25
5. Step 5: Solve for x
   x = 364,171,378.25/21,327
6. Step 6: Final answer
   x = 17,075.60