Finding the Fourth Proportional to 28,044.84, 42,061.30 and 10,515.96

Step by Step Solution

1. Step 1: Write the proportion equation
   28,044.84 : 42,061.30 = 10,515.96 : x
2. Step 2: Convert to fraction form
   28,044.84/42,061.30 = 10,515.96/x
3. Step 3: Cross multiply
   28,044.84x = 42,061.30 × 10,515.96
4. Step 4: Simplify right side
   28,044.84x = 442,314,948.35
5. Step 5: Solve for x
   x = 442,314,948.35/28,044.84
6. Step 6: Final answer
   x = 15,771.71