Finding the Fourth Proportional to 15,499.84, 21,376.56 and 10,462.72

Step by Step Solution

1. Step 1: Write the proportion equation
   15,499.84 : 21,376.56 = 10,462.72 : x
2. Step 2: Convert to fraction form
   15,499.84/21,376.56 = 10,462.72/x
3. Step 3: Cross multiply
   15,499.84x = 21,376.56 × 10,462.72
4. Step 4: Simplify right side
   15,499.84x = 223,656,961.84
5. Step 5: Solve for x
   x = 223,656,961.84/15,499.84
6. Step 6: Final answer
   x = 14,429.63