Finding the Fourth Proportional to 9,153.81, 12,632.38 and 5,377.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,153.81 : 12,632.38 = 5,377.05 : x
2. Step 2: Convert to fraction form
   9,153.81/12,632.38 = 5,377.05/x
3. Step 3: Cross multiply
   9,153.81x = 12,632.38 × 5,377.05
4. Step 4: Simplify right side
   9,153.81x = 67,924,925.44
5. Step 5: Solve for x
   x = 67,924,925.44/9,153.81
6. Step 6: Final answer
   x = 7,420.40