Finding the Fourth Proportional to 13,025.79, 19,530.81 and 5,118.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,025.79 : 19,530.81 = 5,118.84 : x
2. Step 2: Convert to fraction form
   13,025.79/19,530.81 = 5,118.84/x
3. Step 3: Cross multiply
   13,025.79x = 19,530.81 × 5,118.84
4. Step 4: Simplify right side
   13,025.79x = 99,975,091.46
5. Step 5: Solve for x
   x = 99,975,091.46/13,025.79
6. Step 6: Final answer
   x = 7,675.17