Finding the Fourth Proportional to 12,385.85, 17,090.33 and 7,008.53

Step by Step Solution

1. Step 1: Write the proportion equation
   12,385.85 : 17,090.33 = 7,008.53 : x
2. Step 2: Convert to fraction form
   12,385.85/17,090.33 = 7,008.53/x
3. Step 3: Cross multiply
   12,385.85x = 17,090.33 × 7,008.53
4. Step 4: Simplify right side
   12,385.85x = 119,777,970.02
5. Step 5: Solve for x
   x = 119,777,970.02/12,385.85
6. Step 6: Final answer
   x = 9,670.55