Finding the Fourth Proportional to 17,827.78, 24,602.59 and 9,870

Step by Step Solution

1. Step 1: Write the proportion equation
   17,827.78 : 24,602.59 = 9,870 : x
2. Step 2: Convert to fraction form
   17,827.78/24,602.59 = 9,870/x
3. Step 3: Cross multiply
   17,827.78x = 24,602.59 × 9,870
4. Step 4: Simplify right side
   17,827.78x = 242,827,563.30
5. Step 5: Solve for x
   x = 242,827,563.30/17,827.78
6. Step 6: Final answer
   x = 13,620.74