Finding the Fourth Proportional to 13,993.56, 19,302.72 and 8,887.32

Step by Step Solution

1. Step 1: Write the proportion equation
   13,993.56 : 19,302.72 = 8,887.32 : x
2. Step 2: Convert to fraction form
   13,993.56/19,302.72 = 8,887.32/x
3. Step 3: Cross multiply
   13,993.56x = 19,302.72 × 8,887.32
4. Step 4: Simplify right side
   13,993.56x = 171,549,449.51
5. Step 5: Solve for x
   x = 171,549,449.51/13,993.56
6. Step 6: Final answer
   x = 12,259.17