Finding the Fourth Proportional to 9,153.34, 12,631.74 and 5,376.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,153.34 : 12,631.74 = 5,376.58 : x
2. Step 2: Convert to fraction form
   9,153.34/12,631.74 = 5,376.58/x
3. Step 3: Cross multiply
   9,153.34x = 12,631.74 × 5,376.58
4. Step 4: Simplify right side
   9,153.34x = 67,915,560.65
5. Step 5: Solve for x
   x = 67,915,560.65/9,153.34
6. Step 6: Final answer
   x = 7,419.76