Finding the Fourth Proportional to 12,905, 19,326.32 and 7,341.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,905 : 19,326.32 = 7,341.47 : x
2. Step 2: Convert to fraction form
   12,905/19,326.32 = 7,341.47/x
3. Step 3: Cross multiply
   12,905x = 19,326.32 × 7,341.47
4. Step 4: Simplify right side
   12,905x = 141,883,598.49
5. Step 5: Solve for x
   x = 141,883,598.49/12,905
6. Step 6: Final answer
   x = 10,994.47