Finding the Fourth Proportional to 21,659.50, 32,485.15 and 10,555.01

Step by Step Solution

1. Step 1: Write the proportion equation
   21,659.50 : 32,485.15 = 10,555.01 : x
2. Step 2: Convert to fraction form
   21,659.50/32,485.15 = 10,555.01/x
3. Step 3: Cross multiply
   21,659.50x = 32,485.15 × 10,555.01
4. Step 4: Simplify right side
   21,659.50x = 342,881,055.69
5. Step 5: Solve for x
   x = 342,881,055.69/21,659.50
6. Step 6: Final answer
   x = 15,830.51