Finding the Fourth Proportional to 9,348.37, 12,900.52 and 5,156.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,348.37 : 12,900.52 = 5,156.53 : x
2. Step 2: Convert to fraction form
   9,348.37/12,900.52 = 5,156.53/x
3. Step 3: Cross multiply
   9,348.37x = 12,900.52 × 5,156.53
4. Step 4: Simplify right side
   9,348.37x = 66,521,918.40
5. Step 5: Solve for x
   x = 66,521,918.40/9,348.37
6. Step 6: Final answer
   x = 7,115.88