Finding the Fourth Proportional to 22,985.48, 31,719.52 and 12,913.94

Step by Step Solution

1. Step 1: Write the proportion equation
   22,985.48 : 31,719.52 = 12,913.94 : x
2. Step 2: Convert to fraction form
   22,985.48/31,719.52 = 12,913.94/x
3. Step 3: Cross multiply
   22,985.48x = 31,719.52 × 12,913.94
4. Step 4: Simplify right side
   22,985.48x = 409,623,978.11
5. Step 5: Solve for x
   x = 409,623,978.11/22,985.48
6. Step 6: Final answer
   x = 17,820.99