Finding the Fourth Proportional to 31,320.89, 46,988.24 and 9,136.00

Step by Step Solution

1. Step 1: Write the proportion equation
   31,320.89 : 46,988.24 = 9,136.00 : x
2. Step 2: Convert to fraction form
   31,320.89/46,988.24 = 9,136.00/x
3. Step 3: Cross multiply
   31,320.89x = 46,988.24 × 9,136.00
4. Step 4: Simplify right side
   31,320.89x = 429,284,536.98
5. Step 5: Solve for x
   x = 429,284,536.98/31,320.89
6. Step 6: Final answer
   x = 13,706.01