Finding the Fourth Proportional to 21,084.93, 31,561.78 and 13,277.34

Step by Step Solution

1. Step 1: Write the proportion equation
   21,084.93 : 31,561.78 = 13,277.34 : x
2. Step 2: Convert to fraction form
   21,084.93/31,561.78 = 13,277.34/x
3. Step 3: Cross multiply
   21,084.93x = 31,561.78 × 13,277.34
4. Step 4: Simplify right side
   21,084.93x = 419,056,484.07
5. Step 5: Solve for x
   x = 419,056,484.07/21,084.93
6. Step 6: Final answer
   x = 19,874.69