Finding the Fourth Proportional to 19,414.08, 29,071.71 and 12,830.40

Step by Step Solution

1. Step 1: Write the proportion equation
   19,414.08 : 29,071.71 = 12,830.40 : x
2. Step 2: Convert to fraction form
   19,414.08/29,071.71 = 12,830.40/x
3. Step 3: Cross multiply
   19,414.08x = 29,071.71 × 12,830.40
4. Step 4: Simplify right side
   19,414.08x = 373,001,667.98
5. Step 5: Solve for x
   x = 373,001,667.98/19,414.08
6. Step 6: Final answer
   x = 19,212.95