Finding the Fourth Proportional to 15,601.50, 21,530.16 and 10,012.50

Step by Step Solution

1. Step 1: Write the proportion equation
   15,601.50 : 21,530.16 = 10,012.50 : x
2. Step 2: Convert to fraction form
   15,601.50/21,530.16 = 10,012.50/x
3. Step 3: Cross multiply
   15,601.50x = 21,530.16 × 10,012.50
4. Step 4: Simplify right side
   15,601.50x = 215,570,727
5. Step 5: Solve for x
   x = 215,570,727/15,601.50
6. Step 6: Final answer
   x = 13,817.31