Finding the Fourth Proportional to 28,111.69, 38,792.82 and 15,365.53

Step by Step Solution

1. Step 1: Write the proportion equation
   28,111.69 : 38,792.82 = 15,365.53 : x
2. Step 2: Convert to fraction form
   28,111.69/38,792.82 = 15,365.53/x
3. Step 3: Cross multiply
   28,111.69x = 38,792.82 × 15,365.53
4. Step 4: Simplify right side
   28,111.69x = 596,072,239.49
5. Step 5: Solve for x
   x = 596,072,239.49/28,111.69
6. Step 6: Final answer
   x = 21,203.71