Finding the Fourth Proportional to 11,969,501.78, 16,518,320.07 and 7,078,916.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,969,501.78 : 16,518,320.07 = 7,078,916.18 : x
2. Step 2: Convert to fraction form
   11,969,501.78/16,518,320.07 = 7,078,916.18/x
3. Step 3: Cross multiply
   11,969,501.78x = 16,518,320.07 × 7,078,916.18
4. Step 4: Simplify right side
   11,969,501.78x = 116,931,803,209,941.73
5. Step 5: Solve for x
   x = 116,931,803,209,941.73/11,969,501.78
6. Step 6: Final answer
   x = 9,769,145.40