Finding the Fourth Proportional to 21,077.63, 31,618.25 and 8,598.52

Step by Step Solution

1. Step 1: Write the proportion equation
   21,077.63 : 31,618.25 = 8,598.52 : x
2. Step 2: Convert to fraction form
   21,077.63/31,618.25 = 8,598.52/x
3. Step 3: Cross multiply
   21,077.63x = 31,618.25 × 8,598.52
4. Step 4: Simplify right side
   21,077.63x = 271,869,953.91
5. Step 5: Solve for x
   x = 271,869,953.91/21,077.63
6. Step 6: Final answer
   x = 12,898.51