Finding the Fourth Proportional to 23,142,638.16, 31,936,671.01 and 12,688,482.17

Step by Step Solution

1. Step 1: Write the proportion equation
   23,142,638.16 : 31,936,671.01 = 12,688,482.17 : x
2. Step 2: Convert to fraction form
   23,142,638.16/31,936,671.01 = 12,688,482.17/x
3. Step 3: Cross multiply
   23,142,638.16x = 31,936,671.01 × 12,688,482.17
4. Step 4: Simplify right side
   23,142,638.16x = 405,227,880,788,516.31
5. Step 5: Solve for x
   x = 405,227,880,788,516.31/23,142,638.16
6. Step 6: Final answer
   x = 17,510,012.39