Finding the Fourth Proportional to 13,867.31, 19,136.86 and 7,898.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,867.31 : 19,136.86 = 7,898.98 : x
2. Step 2: Convert to fraction form
   13,867.31/19,136.86 = 7,898.98/x
3. Step 3: Cross multiply
   13,867.31x = 19,136.86 × 7,898.98
4. Step 4: Simplify right side
   13,867.31x = 151,161,674.40
5. Step 5: Solve for x
   x = 151,161,674.40/13,867.31
6. Step 6: Final answer
   x = 10,900.58