Finding the Fourth Proportional to 33,315.21, 45,970.55 and 21,394.69

Step by Step Solution

1. Step 1: Write the proportion equation
   33,315.21 : 45,970.55 = 21,394.69 : x
2. Step 2: Convert to fraction form
   33,315.21/45,970.55 = 21,394.69/x
3. Step 3: Cross multiply
   33,315.21x = 45,970.55 × 21,394.69
4. Step 4: Simplify right side
   33,315.21x = 983,525,666.38
5. Step 5: Solve for x
   x = 983,525,666.38/33,315.21
6. Step 6: Final answer
   x = 29,521.82