Finding the Fourth Proportional to 9,346.84, 12,898.59 and 5,155.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,346.84 : 12,898.59 = 5,155.09 : x
2. Step 2: Convert to fraction form
   9,346.84/12,898.59 = 5,155.09/x
3. Step 3: Cross multiply
   9,346.84x = 12,898.59 × 5,155.09
4. Step 4: Simplify right side
   9,346.84x = 66,493,392.32
5. Step 5: Solve for x
   x = 66,493,392.32/9,346.84
6. Step 6: Final answer
   x = 7,114.00