Finding the Fourth Proportional to 9,355.79, 12,911.00 and 5,164.04

Step by Step Solution

1. Step 1: Write the proportion equation
   9,355.79 : 12,911.00 = 5,164.04 : x
2. Step 2: Convert to fraction form
   9,355.79/12,911.00 = 5,164.04/x
3. Step 3: Cross multiply
   9,355.79x = 12,911.00 × 5,164.04
4. Step 4: Simplify right side
   9,355.79x = 66,672,830.06
5. Step 5: Solve for x
   x = 66,672,830.06/9,355.79
6. Step 6: Final answer
   x = 7,126.37