Finding the Fourth Proportional to 21,730.96, 32,611.98 and 9,259.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,730.96 : 32,611.98 = 9,259.72 : x
2. Step 2: Convert to fraction form
   21,730.96/32,611.98 = 9,259.72/x
3. Step 3: Cross multiply
   21,730.96x = 32,611.98 × 9,259.72
4. Step 4: Simplify right side
   21,730.96x = 301,977,803.45
5. Step 5: Solve for x
   x = 301,977,803.45/21,730.96
6. Step 6: Final answer
   x = 13,896.20