Finding the Fourth Proportional to 9,129.84, 12,598.89 and 5,150.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,129.84 : 12,598.89 = 5,150.90 : x
2. Step 2: Convert to fraction form
   9,129.84/12,598.89 = 5,150.90/x
3. Step 3: Cross multiply
   9,129.84x = 12,598.89 × 5,150.90
4. Step 4: Simplify right side
   9,129.84x = 64,895,559.51
5. Step 5: Solve for x
   x = 64,895,559.51/9,129.84
6. Step 6: Final answer
   x = 7,108.07