Finding the Fourth Proportional to 9,319.34, 12,860.52 and 5,127.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,319.34 : 12,860.52 = 5,127.50 : x
2. Step 2: Convert to fraction form
   9,319.34/12,860.52 = 5,127.50/x
3. Step 3: Cross multiply
   9,319.34x = 12,860.52 × 5,127.50
4. Step 4: Simplify right side
   9,319.34x = 65,942,316.30
5. Step 5: Solve for x
   x = 65,942,316.30/9,319.34
6. Step 6: Final answer
   x = 7,075.86