Finding the Fourth Proportional to 15,561.32, 21,475.26 and 8,848.10

Step by Step Solution

1. Step 1: Write the proportion equation
   15,561.32 : 21,475.26 = 8,848.10 : x
2. Step 2: Convert to fraction form
   15,561.32/21,475.26 = 8,848.10/x
3. Step 3: Cross multiply
   15,561.32x = 21,475.26 × 8,848.10
4. Step 4: Simplify right side
   15,561.32x = 190,015,301.69
5. Step 5: Solve for x
   x = 190,015,301.69/15,561.32
6. Step 6: Final answer
   x = 12,210.75