Finding the Fourth Proportional to 8,641.42, 12,961.52 and 4,932.02

Step by Step Solution

1. Step 1: Write the proportion equation
   8,641.42 : 12,961.52 = 4,932.02 : x
2. Step 2: Convert to fraction form
   8,641.42/12,961.52 = 4,932.02/x
3. Step 3: Cross multiply
   8,641.42x = 12,961.52 × 4,932.02
4. Step 4: Simplify right side
   8,641.42x = 63,926,502.11
5. Step 5: Solve for x
   x = 63,926,502.11/8,641.42
6. Step 6: Final answer
   x = 7,397.69