Finding the Fourth Proportional to 12,308.58, 16,985.25 and 7,002.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,308.58 : 16,985.25 = 7,002.90 : x
2. Step 2: Convert to fraction form
   12,308.58/16,985.25 = 7,002.90/x
3. Step 3: Cross multiply
   12,308.58x = 16,985.25 × 7,002.90
4. Step 4: Simplify right side
   12,308.58x = 118,946,007.23
5. Step 5: Solve for x
   x = 118,946,007.23/12,308.58
6. Step 6: Final answer
   x = 9,663.67