Finding the Fourth Proportional to 10,342.84, 15,511.98 and 5,072.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,342.84 : 15,511.98 = 5,072.56 : x
2. Step 2: Convert to fraction form
   10,342.84/15,511.98 = 5,072.56/x
3. Step 3: Cross multiply
   10,342.84x = 15,511.98 × 5,072.56
4. Step 4: Simplify right side
   10,342.84x = 78,685,449.27
5. Step 5: Solve for x
   x = 78,685,449.27/10,342.84
6. Step 6: Final answer
   x = 7,607.72