Finding the Fourth Proportional to 12,904.48, 19,361.04 and 5,115.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,904.48 : 19,361.04 = 5,115.52 : x
2. Step 2: Convert to fraction form
   12,904.48/19,361.04 = 5,115.52/x
3. Step 3: Cross multiply
   12,904.48x = 19,361.04 × 5,115.52
4. Step 4: Simplify right side
   12,904.48x = 99,041,787.34
5. Step 5: Solve for x
   x = 99,041,787.34/12,904.48
6. Step 6: Final answer
   x = 7,674.99