Finding the Fourth Proportional to 10,061.99, 13,886.42 and 5,586.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,061.99 : 13,886.42 = 5,586.60 : x
2. Step 2: Convert to fraction form
   10,061.99/13,886.42 = 5,586.60/x
3. Step 3: Cross multiply
   10,061.99x = 13,886.42 × 5,586.60
4. Step 4: Simplify right side
   10,061.99x = 77,577,846.04
5. Step 5: Solve for x
   x = 77,577,846.04/10,061.99
6. Step 6: Final answer
   x = 7,709.99