Finding the Fourth Proportional to 12,808.47, 17,669.57 and 7,430.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,808.47 : 17,669.57 = 7,430.88 : x
2. Step 2: Convert to fraction form
   12,808.47/17,669.57 = 7,430.88/x
3. Step 3: Cross multiply
   12,808.47x = 17,669.57 × 7,430.88
4. Step 4: Simplify right side
   12,808.47x = 131,300,417.17
5. Step 5: Solve for x
   x = 131,300,417.17/12,808.47
6. Step 6: Final answer
   x = 10,251.06