Finding the Fourth Proportional to 12,940.53, 19,406.01 and 4,618.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,940.53 : 19,406.01 = 4,618.32 : x
2. Step 2: Convert to fraction form
   12,940.53/19,406.01 = 4,618.32/x
3. Step 3: Cross multiply
   12,940.53x = 19,406.01 × 4,618.32
4. Step 4: Simplify right side
   12,940.53x = 89,623,164.10
5. Step 5: Solve for x
   x = 89,623,164.10/12,940.53
6. Step 6: Final answer
   x = 6,925.77