Finding the Fourth Proportional to 10,618,091.50, 15,927,195.60 and 2,639,915.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,618,091.50 : 15,927,195.60 = 2,639,915.50 : x
2. Step 2: Convert to fraction form
   10,618,091.50/15,927,195.60 = 2,639,915.50/x
3. Step 3: Cross multiply
   10,618,091.50x = 15,927,195.60 × 2,639,915.50
4. Step 4: Simplify right side
   10,618,091.50x = 42,046,450,535,971.80
5. Step 5: Solve for x
   x = 42,046,450,535,971.80/10,618,091.50
6. Step 6: Final answer
   x = 3,959,887.76