Finding the Fourth Proportional to 9,916,422, 13,685,339.88 and 5,506,375.20

Step by Step Solution

1. Step 1: Write the proportion equation
   9,916,422 : 13,685,339.88 = 5,506,375.20 : x
2. Step 2: Convert to fraction form
   9,916,422/13,685,339.88 = 5,506,375.20/x
3. Step 3: Cross multiply
   9,916,422x = 13,685,339.88 × 5,506,375.20
4. Step 4: Simplify right side
   9,916,422x = 75,356,616,118,802.98
5. Step 5: Solve for x
   x = 75,356,616,118,802.98/9,916,422
6. Step 6: Final answer
   x = 7,599,173.99