Finding the Fourth Proportional to 13,008.88, 17,946.72 and 8,292.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,008.88 : 17,946.72 = 8,292.16 : x
2. Step 2: Convert to fraction form
   13,008.88/17,946.72 = 8,292.16/x
3. Step 3: Cross multiply
   13,008.88x = 17,946.72 × 8,292.16
4. Step 4: Simplify right side
   13,008.88x = 148,817,073.72
5. Step 5: Solve for x
   x = 148,817,073.72/13,008.88
6. Step 6: Final answer
   x = 11,439.65