Finding the Fourth Proportional to 15,536.61, 21,433.69 and 10,499.00

Step by Step Solution

1. Step 1: Write the proportion equation
   15,536.61 : 21,433.69 = 10,499.00 : x
2. Step 2: Convert to fraction form
   15,536.61/21,433.69 = 10,499.00/x
3. Step 3: Cross multiply
   15,536.61x = 21,433.69 × 10,499.00
4. Step 4: Simplify right side
   15,536.61x = 225,032,217.27
5. Step 5: Solve for x
   x = 225,032,217.27/15,536.61
6. Step 6: Final answer
   x = 14,484.00