Finding the Fourth Proportional to 21,818.01, 32,738.76 and 8,670.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,818.01 : 32,738.76 = 8,670.50 : x
2. Step 2: Convert to fraction form
   21,818.01/32,738.76 = 8,670.50/x
3. Step 3: Cross multiply
   21,818.01x = 32,738.76 × 8,670.50
4. Step 4: Simplify right side
   21,818.01x = 283,861,254.89
5. Step 5: Solve for x
   x = 283,861,254.89/21,818.01
6. Step 6: Final answer
   x = 13,010.41