Finding the Fourth Proportional to 7,075.86, 10,617.89 and 2,915.09

Step by Step Solution

1. Step 1: Write the proportion equation
   7,075.86 : 10,617.89 = 2,915.09 : x
2. Step 2: Convert to fraction form
   7,075.86/10,617.89 = 2,915.09/x
3. Step 3: Cross multiply
   7,075.86x = 10,617.89 × 2,915.09
4. Step 4: Simplify right side
   7,075.86x = 30,952,077.11
5. Step 5: Solve for x
   x = 30,952,077.11/7,075.86
6. Step 6: Final answer
   x = 4,374.32