Finding the Fourth Proportional to 15,543.12, 21,443.10 and 10,830.14

Step by Step Solution

1. Step 1: Write the proportion equation
   15,543.12 : 21,443.10 = 10,830.14 : x
2. Step 2: Convert to fraction form
   15,543.12/21,443.10 = 10,830.14/x
3. Step 3: Cross multiply
   15,543.12x = 21,443.10 × 10,830.14
4. Step 4: Simplify right side
   15,543.12x = 232,231,667.82
5. Step 5: Solve for x
   x = 232,231,667.82/15,543.12
6. Step 6: Final answer
   x = 14,941.12