Finding the Fourth Proportional to 21,767.98, 30,034.56 and 13,807.30

Step by Step Solution

1. Step 1: Write the proportion equation
   21,767.98 : 30,034.56 = 13,807.30 : x
2. Step 2: Convert to fraction form
   21,767.98/30,034.56 = 13,807.30/x
3. Step 3: Cross multiply
   21,767.98x = 30,034.56 × 13,807.30
4. Step 4: Simplify right side
   21,767.98x = 414,696,030.12
5. Step 5: Solve for x
   x = 414,696,030.12/21,767.98
6. Step 6: Final answer
   x = 19,050.74