Finding the Fourth Proportional to 9,124.00, 12,591.31 and 5,144.35

Step by Step Solution

1. Step 1: Write the proportion equation
   9,124.00 : 12,591.31 = 5,144.35 : x
2. Step 2: Convert to fraction form
   9,124.00/12,591.31 = 5,144.35/x
3. Step 3: Cross multiply
   9,124.00x = 12,591.31 × 5,144.35
4. Step 4: Simplify right side
   9,124.00x = 64,774,084.04
5. Step 5: Solve for x
   x = 64,774,084.04/9,124.00
6. Step 6: Final answer
   x = 7,099.30