Finding the Fourth Proportional to 10,386.34, 14,312.55 and 7,396.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,386.34 : 14,312.55 = 7,396.90 : x
2. Step 2: Convert to fraction form
   10,386.34/14,312.55 = 7,396.90/x
3. Step 3: Cross multiply
   10,386.34x = 14,312.55 × 7,396.90
4. Step 4: Simplify right side
   10,386.34x = 105,868,501.10
5. Step 5: Solve for x
   x = 105,868,501.10/10,386.34
6. Step 6: Final answer
   x = 10,193.05