Finding the Fourth Proportional to 9,438.63, 13,025.63 and 5,190.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,438.63 : 13,025.63 = 5,190.08 : x
2. Step 2: Convert to fraction form
   9,438.63/13,025.63 = 5,190.08/x
3. Step 3: Cross multiply
   9,438.63x = 13,025.63 × 5,190.08
4. Step 4: Simplify right side
   9,438.63x = 67,604,061.75
5. Step 5: Solve for x
   x = 67,604,061.75/9,438.63
6. Step 6: Final answer
   x = 7,162.49